Sunday 10 April 2011
Friday 8 April 2011
Saturday 2 April 2011
Wednesday 30 March 2011
Sunday 27 March 2011
Tuesday 22 March 2011
Wednesday 9 March 2011
MAGNOLIA: 95-MILLION YEAR OLD TOOTHPASTE
A traditional Chinese extract from the bark of the magnolia tree, an ancient genus that goes back some 95-million years, gives you fresh breath by killing off the nasty oral microbes that cause halitosis.
My favorite individual tree is the magnolia growing on the grounds at Balboa Park. It is a magnificent example of the family Magnoliaceae and takes up nearly a whole city block. Older magnolia have this elegant quality of long draping branches, perfect for avoiding a predator while enjoying an afternoon's snooze.
Given that our ancestors decended from the trees, pre Lucy now it seems, and that we've seen bits of magnolia bark in firepits from 10,000 to 80,000 years ago, we may have enjoyed Magnoliaceae as a comfortable perch, hearth and perhaps even some additional oral benefits -- magnolia toothpaste anyone?
My favorite individual tree is the magnolia growing on the grounds at Balboa Park. It is a magnificent example of the family Magnoliaceae and takes up nearly a whole city block. Older magnolia have this elegant quality of long draping branches, perfect for avoiding a predator while enjoying an afternoon's snooze.
Given that our ancestors decended from the trees, pre Lucy now it seems, and that we've seen bits of magnolia bark in firepits from 10,000 to 80,000 years ago, we may have enjoyed Magnoliaceae as a comfortable perch, hearth and perhaps even some additional oral benefits -- magnolia toothpaste anyone?
Saturday 5 March 2011
SAILING DESOLATION SOUND
Wind, waves and perfect anchorages await those lucky enough to spend time in Desolation Sound, a 30-square-mile premier cruising area and the province's largest marine park, due south of West Redonda Island on British Columbia's glorious west coast.
With the sun just peaking back in BC, a few friends gathered up supplies and plenty of sunscreen to get out and play in the wind up in Desolation Sound. Two of the days we were joined by resident killer whale and porpoise eager to join in on the surf.
Our crew enjoyed sunny, windy days and cool refreshing nights filled with fresh Pacific seafood bounty -- crab, oysters and salmon!
With the sun just peaking back in BC, a few friends gathered up supplies and plenty of sunscreen to get out and play in the wind up in Desolation Sound. Two of the days we were joined by resident killer whale and porpoise eager to join in on the surf.
Our crew enjoyed sunny, windy days and cool refreshing nights filled with fresh Pacific seafood bounty -- crab, oysters and salmon!
Friday 25 February 2011
Tuesday 22 February 2011
Monday 14 February 2011
Thursday 10 February 2011
STORM COMING IN: PADDLING LOCAL WEATHER
Like most mountainous areas, Bowron makes its own weather system and it appears you get everything in a 24-hour period. In fact, whatever weather you are enjoying seems to change 40 minutes later; good for rain, bad for sun. Wisps of cloud that seemed light and airy only hours early have become dark. Careful to hug the shore, we are ready for a quick escape from lightening as thundershowers break.
Local weather, and more importantly, wind, comes from a mixture of factors. Knowledge of the topography, the relative temperature of land and lake we paddle help predict how windy and soggy our afternoon will be. Today, the cooler air is flowing off the water up the forested slopes, heating and rising as it does so, creating a 5-15 knot intermittent force that turns ripples into small white caps.
We break for lunch to wait out the worst of it, knowing that the winds that started mid-morning will subside by late afternoon and rise again after sunset.
We snack on warm soup and flatbread, watching as our once crystal clear oasis turns to froth. Warm, dry and now with full bellies, we get back on the water.
We’re eager to push through to our next destination knowing that by nightfall the katabatic winds will arrive, as warmer air from the hillsides flows down and out over the chilly lake. We paddle in unison, enjoying the crisp air, confident that well before then we’ll be snugged in our tents sipping hot cocoa.
Local weather, and more importantly, wind, comes from a mixture of factors. Knowledge of the topography, the relative temperature of land and lake we paddle help predict how windy and soggy our afternoon will be. Today, the cooler air is flowing off the water up the forested slopes, heating and rising as it does so, creating a 5-15 knot intermittent force that turns ripples into small white caps.
We break for lunch to wait out the worst of it, knowing that the winds that started mid-morning will subside by late afternoon and rise again after sunset.
We snack on warm soup and flatbread, watching as our once crystal clear oasis turns to froth. Warm, dry and now with full bellies, we get back on the water.
We’re eager to push through to our next destination knowing that by nightfall the katabatic winds will arrive, as warmer air from the hillsides flows down and out over the chilly lake. We paddle in unison, enjoying the crisp air, confident that well before then we’ll be snugged in our tents sipping hot cocoa.
Monday 7 February 2011
Wednesday 2 February 2011
VOLOUBILIS: ROMAN RUINS AND FOSSIL REMAINS
Voloubilis, a one of the pivotal cities in the expansion of Roman Empire, boasts a beautifully preserved basilica, triumphal arch, and columns of the Capitol Temple set against a backdrop of olive groves.
The area is also home to paleontological remains from ages past. Massive trilobites and enormous elephant bones have been recovered from the fossil-rich deposits and other sites have yielded clues to our ancestors.
The remains of H. erectus and other ill-defined (it could just be my bad Arabic) species of "archaic Homo sapiens," though not well-publicized, have been found at various sites around North Africa, in Algeria and Morocco.
The area is also home to paleontological remains from ages past. Massive trilobites and enormous elephant bones have been recovered from the fossil-rich deposits and other sites have yielded clues to our ancestors.
The remains of H. erectus and other ill-defined (it could just be my bad Arabic) species of "archaic Homo sapiens," though not well-publicized, have been found at various sites around North Africa, in Algeria and Morocco.
Thursday 27 January 2011
Monday 24 January 2011
Saturday 22 January 2011
Monday 17 January 2011
TWILIGHT PADDLE: WIDGEON ESTUARY
Widgeon Estuary is a wonderful springtime jaunt either as a daytrip or overnight. The paddling is easy. You can do the trip via kayak or canoe and can stay for the night or do it as a day trip. I'll be planning to camp near the base of the trail to the falls and will likely go for three days.
There is nothing better than to cruise flat water with rippling reflections of big snowy mountains cascading off your bow.
The estuary of Widgeon Creek at the south end of Pitt Lake at Grant Narrows is the perfect place to enjoy this sensation.
If you like quiet peaceful waterways teaming with bird life this is the place to go for the whole estuary is a protected bird sanctuary. After making the 300m crossing of Grant Narrows, expect to see tons of waterfowl and other species from herons to harlequins that make this area their habitat. You might even see a fleeting glimpse of muskrat or beaver if you are lucky.
If Widgeon Creek is high in the spring or early summer you can paddle quite a distance up under lazy overhanging branches draped in moss and lichen. Huge lush ferns and skunk cabbage line the shoreline in the marshy areas and neat little gravel bars are gathered in the bends of the creek. When you are there you will be amazed that you can be so close to the city yet so far away.
A campsite is located near the west end of the estuary if you want to stay longer. This is probably best to do in the shoulder season when it isn't so busy. If the water is high more secluded sites are located up the river.
There is nothing better than to cruise flat water with rippling reflections of big snowy mountains cascading off your bow.
The estuary of Widgeon Creek at the south end of Pitt Lake at Grant Narrows is the perfect place to enjoy this sensation.
If you like quiet peaceful waterways teaming with bird life this is the place to go for the whole estuary is a protected bird sanctuary. After making the 300m crossing of Grant Narrows, expect to see tons of waterfowl and other species from herons to harlequins that make this area their habitat. You might even see a fleeting glimpse of muskrat or beaver if you are lucky.
If Widgeon Creek is high in the spring or early summer you can paddle quite a distance up under lazy overhanging branches draped in moss and lichen. Huge lush ferns and skunk cabbage line the shoreline in the marshy areas and neat little gravel bars are gathered in the bends of the creek. When you are there you will be amazed that you can be so close to the city yet so far away.
A campsite is located near the west end of the estuary if you want to stay longer. This is probably best to do in the shoulder season when it isn't so busy. If the water is high more secluded sites are located up the river.
Saturday 8 January 2011
PTEROSAURS: CATCHING PREY ON THE WING
Pterosaurs, the mighty winged-lizards, soared ancient skies expertly hunting for prey. Because they evolved from reptiles prior to modern birds, it was once believed that pterosaurs were primitive, passive fliers. They were seen as gliders, rather than skillfull hunters. Being the earliest vertebrates to have evolved powered flight, we now recognize that they were powerful fliers, chasing and catching their prey on the wing. One clue to this revelation is a small bone at the front of the wing bone which curves back towards the shoulder, roughly like an elongated thumb on a spread hand.
Modern birds have a small but vital feather, the aula, in this position. It shifts, acting like the leading edge on some airplane wings, redirecting the airflow over the wing, and allowing major changes in speed and angle in the air for comparatively little effort. It seems clear the pterosaurs’ extended thumb would have held a flap of membrane in a similar position at the front of the wing, and for a similar purpose. Their skulls hold the other clue; they have much larger brain cases in relation to their size than their earth-bound contemporaries. Co-ordination of flight requires tremendous brainpower, and co-ordination of active flight, with the constant shift in the shape and location of massive wings, even more so. Nature is extremely parsimonious, not frittering away investment in any organ where it is not needed.
Given the engineering challenges and the energy costs of getting each additional gram of weight off the ground, pterosaurs would never have developed such large and heavy “on board computers” unless they clearly paid their own way in faster, more nimble flight that would have allowed their owners to catch more prey and outmaneuver competing aerial hunters and scavengers.
Modern birds have a small but vital feather, the aula, in this position. It shifts, acting like the leading edge on some airplane wings, redirecting the airflow over the wing, and allowing major changes in speed and angle in the air for comparatively little effort. It seems clear the pterosaurs’ extended thumb would have held a flap of membrane in a similar position at the front of the wing, and for a similar purpose. Their skulls hold the other clue; they have much larger brain cases in relation to their size than their earth-bound contemporaries. Co-ordination of flight requires tremendous brainpower, and co-ordination of active flight, with the constant shift in the shape and location of massive wings, even more so. Nature is extremely parsimonious, not frittering away investment in any organ where it is not needed.
Given the engineering challenges and the energy costs of getting each additional gram of weight off the ground, pterosaurs would never have developed such large and heavy “on board computers” unless they clearly paid their own way in faster, more nimble flight that would have allowed their owners to catch more prey and outmaneuver competing aerial hunters and scavengers.
Sunday 2 January 2011
PADDLING PARADISE
Like most mountainous areas, Bowron makes its own weather system and it appears you get everything in a 24-hour period. In fact, whatever weather you are enjoying seems to change 40 minutes later; good for rain, bad for sun. Wisps of cloud that seemed light and airy only hours early have become dark. Careful to hug the shore, we are ready for a quick escape from lightening as thundershowers break.
Saturday 1 January 2011
Tuesday 28 December 2010
WOOLY MAMMOTH
Creating long extinct life through harvested genetic remains is closer than you think. After successful experiments at the Institute for Reproductive Studies in Scottsdale, Arizona, with frozen mice sperm, scientists are now experimenting with sperm from mammoths preserved in Siberian ice.
We may one day have wooly mammoths (Mammuthus primigenius), extinct since the Pleistocene, roaming around zoos and colder climes. At least it looks that way. Because of their massive size and icy cold environment, many mammoths have been preserved as frozen carcasses instead of being turned to stone, thus they are prime candidates for genetic reproduction. We really can bring them back. When originally touted in the news as a possibility, most audiences took the science to be too farfetched.
Researchers harvesting DNA and deciphering their genome feel they are on the edge of doing just that. Science as we know it is sliding down the double helix to science fiction. DNA, long bits of genetic code that form the roadmap of how we are built, is relatively easy to harvest and remarkably hardy.
Even with the abuse of time, small amounts can be extracted and with that the genetic wizards are able to put the puzzle pieces back together. Frozen sperm is used in fertility clinics around the globe, the difference here is that the entire mammal is frozen before harvesting the sperm. Once harvested, the frozen sperm from long extinct male mammoths is injected into eggs from females of closely related species. While positive results have been made and papers published (see the National Academy of Sciences) a baby mammoth has yet to be conceived.
A return debut? Yes, it seems it is true. Geneticists have mastered the craft, mapping out the genetic code on species ranging from mice to men. So, start planning their "Welcome back" parties. Wooly's time has arrived!
We may one day have wooly mammoths (Mammuthus primigenius), extinct since the Pleistocene, roaming around zoos and colder climes. At least it looks that way. Because of their massive size and icy cold environment, many mammoths have been preserved as frozen carcasses instead of being turned to stone, thus they are prime candidates for genetic reproduction. We really can bring them back. When originally touted in the news as a possibility, most audiences took the science to be too farfetched.
Researchers harvesting DNA and deciphering their genome feel they are on the edge of doing just that. Science as we know it is sliding down the double helix to science fiction. DNA, long bits of genetic code that form the roadmap of how we are built, is relatively easy to harvest and remarkably hardy.
Even with the abuse of time, small amounts can be extracted and with that the genetic wizards are able to put the puzzle pieces back together. Frozen sperm is used in fertility clinics around the globe, the difference here is that the entire mammal is frozen before harvesting the sperm. Once harvested, the frozen sperm from long extinct male mammoths is injected into eggs from females of closely related species. While positive results have been made and papers published (see the National Academy of Sciences) a baby mammoth has yet to be conceived.
A return debut? Yes, it seems it is true. Geneticists have mastered the craft, mapping out the genetic code on species ranging from mice to men. So, start planning their "Welcome back" parties. Wooly's time has arrived!
Sunday 12 December 2010
Tuesday 7 December 2010
Thursday 11 November 2010
Friday 5 November 2010
Tuesday 2 November 2010
IMPOSING WHITE PEAKS: THE CARIBOO GROUP
We soak up the breathtaking views after a long morning's paddle. The east and south sides of our route are bound by the imposing white peaks of the Cariboo Mountains, the northern boundary of the Interior wet belt, rising up across the Rocky Mountain Trench, and the Isaac Formation, the oldest of seven formations that make up the Cariboo Group. Some 270 million plus years ago, had one wanted to buy waterfront property in what is now British Columbia, you’d be looking somewhere between Prince George and the Alberta border. The rest of the province had yet to arrive but would be made up of over twenty major terranes from around the Pacific. The rock that would eventually become the Cariboo Mountains and form the lakes and valleys of Bowron was far out in the Pacific Ocean, down near the equator.
With tectonic shifting, these rocks drifted north-eastward, riding their continental plate, until they collided with and joined the Cordillera in what is now British Columbia. Continued pressure and volcanic activity helped create the tremendous slopes of the Cariboo Range we see today with repeated bouts of glaciation during the Pleistocene carving their final shape. Warm and dry with bellies filled full of soup and crisps, we head back out to explore more of nature's bounty.
With tectonic shifting, these rocks drifted north-eastward, riding their continental plate, until they collided with and joined the Cordillera in what is now British Columbia. Continued pressure and volcanic activity helped create the tremendous slopes of the Cariboo Range we see today with repeated bouts of glaciation during the Pleistocene carving their final shape. Warm and dry with bellies filled full of soup and crisps, we head back out to explore more of nature's bounty.
Monday 1 November 2010
Sunday 31 October 2010
Sunday 24 October 2010
Tuesday 19 October 2010
HUMAN REMAINS FOUND IN TRANSILVANIA
I travelled to Transylvania last year and spent some time in the newly minted anthro-capilal of Romania. I was lucky enough to brush shoulders and prep tools with paleoanthropologists working on a new find that changes what we know about early human activity in Eastern Europe.
If Van Helsing were poking around Transylvania these days, chances are he'd be more likely to be looking for the decaying remains of 35,000 year old humans than blood drinking vampires. Romania's dark history extends back way past the days of Vlad. Seems vampires and ghouls aside, something darker and much more interesting lurks.
The remains of a man, woman and teenage boy, the first Romanian family if you will, tell the most complete picture of what our ancestors were like some 35,000 years ago.
International scientists have been carrying out further analysis to get a clearer picture on the find, said anthropologist Erik Trinkaus, of Washington University in St. Louis.
But it's already clear that, "this is the most complete collection of modern humans in Europe older than 28,000 years," he told The Associated Press. "We are very excited about it," And they have reason to be. The find is changing perceptions about modern humans.
Romanian recreational cavers unearthed the remains of three facial bones last year, and gave them to Romanian scientists. Romanian scientists asked Trinkaus to analyze the fossils, and he traveled to the Romanian city of Cluj this week with Portuguese scientist Joao Zilhao , a fossil specialist.
Included in the find was a jawbone belonging to a male around 35-years in age. It was found alongside a partial skull and teeth from another male, likely his son or perhaps another relative, around 15-years old. The bone fragments were near a temporal bone to a woman of unspecified age.
"This was 25,000 years before agriculture. Certainly they were hunters," said Trinkaus . He said the bones were discovered in the foothills of the Carpathian Mountains . Trinkaus said the humans would have had religious beliefs, used stone tools, and a well-defined social system and lived in a period in during which early modern humans overlapped with late surviving Neanderthals in Europe.
The humans survived because the area was ecologically variable being close the Banat plain and close to the mountains. A team of international scientists from the United States , Norway , Portugal and Britain will return to the cave to continue their field work next year.
Look out Van Helsing, there are new kids in town.
If Van Helsing were poking around Transylvania these days, chances are he'd be more likely to be looking for the decaying remains of 35,000 year old humans than blood drinking vampires. Romania's dark history extends back way past the days of Vlad. Seems vampires and ghouls aside, something darker and much more interesting lurks.
The remains of a man, woman and teenage boy, the first Romanian family if you will, tell the most complete picture of what our ancestors were like some 35,000 years ago.
International scientists have been carrying out further analysis to get a clearer picture on the find, said anthropologist Erik Trinkaus, of Washington University in St. Louis.
But it's already clear that, "this is the most complete collection of modern humans in Europe older than 28,000 years," he told The Associated Press. "We are very excited about it," And they have reason to be. The find is changing perceptions about modern humans.
Romanian recreational cavers unearthed the remains of three facial bones last year, and gave them to Romanian scientists. Romanian scientists asked Trinkaus to analyze the fossils, and he traveled to the Romanian city of Cluj this week with Portuguese scientist Joao Zilhao , a fossil specialist.
Included in the find was a jawbone belonging to a male around 35-years in age. It was found alongside a partial skull and teeth from another male, likely his son or perhaps another relative, around 15-years old. The bone fragments were near a temporal bone to a woman of unspecified age.
"This was 25,000 years before agriculture. Certainly they were hunters," said Trinkaus . He said the bones were discovered in the foothills of the Carpathian Mountains . Trinkaus said the humans would have had religious beliefs, used stone tools, and a well-defined social system and lived in a period in during which early modern humans overlapped with late surviving Neanderthals in Europe.
The humans survived because the area was ecologically variable being close the Banat plain and close to the mountains. A team of international scientists from the United States , Norway , Portugal and Britain will return to the cave to continue their field work next year.
Look out Van Helsing, there are new kids in town.
Sunday 17 October 2010
Tuesday 5 October 2010
Sunday 26 September 2010
Wednesday 22 September 2010
Monday 20 September 2010
CHUCKANUT DRIVE: EOCENE TROPICAL PARADISE
The siltstones, sandstones, mudstones and conglomerates of the Chuckanut Formation were laid down about 40-54 million years ago during the Eocene epoch, a time of luxuriant plant growth in the subtropical flood plain that covered much of the Pacific Northwest.
Tuesday 14 September 2010
Saturday 11 September 2010
MOONLIT NIGHT: DINOSAUR TRACKWAYS
In the summer of 2005, I joined Jen Becker, and fellow delegates from the British Columbia Paleontological Symposium for an impromptu late night tour of Wolverine River, one of many prolific research sites of Lisa Buckley, a magnificent vertebrate paleontologist working in the Tumbler Ridge area of British Columbia.
There are two types of footprints at the Wolverine River Tracksite - theropods (at least four different sizes) and ankylosaurs. The prints featured in this photo were laid down by ankylosaurs. Many of the prints are so shallow that they can only be recognised by the skin impressions pressed into the tracks.
At Wolverine, we filled in the dinosaur trackways with water and then lit them by lamplight to mysterious effect.
No visit to BC's Peace Region is complete without a trip to the Tumbler Ridge Museum and Dinosaur Lake Campground.
In 2000, two young boys, Mark Turner and Daniel Helm, were tubing down the rapids of Flatbed Creek just below Tumbler Ridge. As they walked up the shoreline excitement began to build as they quickly recognized a series of regular depressions as dinosaur footprints. Their discovery spurred an infusion of tourism and research in the area.
The Hudson's Hope Museum, also in the Peace Region, has an extensive collection of terrestrial and marine fossils from the area. They feature ichthysaurs, a marine reptile and hadrosaur tracks.
Driftwood Canyon Provincial Park, near Smithers, is open to visitors interested in photographing significant marine fossils. If you do not have a chance to get out to the site, you can also view the collections at the Bulkley Valley Museum in Smithers.
There are two types of footprints at the Wolverine River Tracksite - theropods (at least four different sizes) and ankylosaurs. The prints featured in this photo were laid down by ankylosaurs. Many of the prints are so shallow that they can only be recognised by the skin impressions pressed into the tracks.
At Wolverine, we filled in the dinosaur trackways with water and then lit them by lamplight to mysterious effect.
No visit to BC's Peace Region is complete without a trip to the Tumbler Ridge Museum and Dinosaur Lake Campground.
In 2000, two young boys, Mark Turner and Daniel Helm, were tubing down the rapids of Flatbed Creek just below Tumbler Ridge. As they walked up the shoreline excitement began to build as they quickly recognized a series of regular depressions as dinosaur footprints. Their discovery spurred an infusion of tourism and research in the area.
The Hudson's Hope Museum, also in the Peace Region, has an extensive collection of terrestrial and marine fossils from the area. They feature ichthysaurs, a marine reptile and hadrosaur tracks.
Driftwood Canyon Provincial Park, near Smithers, is open to visitors interested in photographing significant marine fossils. If you do not have a chance to get out to the site, you can also view the collections at the Bulkley Valley Museum in Smithers.
Saturday 28 August 2010
Friday 27 August 2010
FOSSILS OF OREGON: FARALLON PLATE
Had you been swimming with the marine fossils that were laid down in the Eocene Epoch in Oregon, some 55 to 38 million years ago, you'd be treading water right up to where the Cascade Mountains are today.
The Farallon Plate took a turn north some 57 million years ago, sweeping much of western coastal Oregon along with it. The Cascades were beginning to uplift and were fast becoming the breakwater for a retreating Pacific Ocean.
By the middle Oligocene, the Cascadia Subduction Zone was in full force with growing pressure erupting volcanoes along the Western Cascades, a pattern that was to continue well into the Miocene. The soft ocean sediments of Oregon contain beautifully preserved gastropods, bivalves and cephalopods.
The Farallon Plate took a turn north some 57 million years ago, sweeping much of western coastal Oregon along with it. The Cascades were beginning to uplift and were fast becoming the breakwater for a retreating Pacific Ocean.
By the middle Oligocene, the Cascadia Subduction Zone was in full force with growing pressure erupting volcanoes along the Western Cascades, a pattern that was to continue well into the Miocene. The soft ocean sediments of Oregon contain beautifully preserved gastropods, bivalves and cephalopods.
Wednesday 25 August 2010
Friday 20 August 2010
Wednesday 11 August 2010
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