Christopher Joyce appears in the following:
Wednesday, August 27, 2014
Peaks around Glacier National Park store water that irrigates a large section of North America. But a warming climate is shrinking that snowpack, with ominous consequences for wildlife and people.
Monday, August 18, 2014
Two New England towns dominated the world's ivory market from 1840 to 1940 — transforming imported tusks from African elephants into piano keys and combs. Today's residents grapple with a dark past.
Tuesday, July 15, 2014
Marine biologists worry that certain species won't survive the shifts in sea acidity that climate change brings. But research on sea grasses along California's coast suggest marine preserves can help.
Tuesday, July 15, 2014
Steve Inskeep talks to Israeli author Etgar Keret about tensions on the streets of Tel Aviv during the current violence with Hamas, and what the difference is between peace and compromise.
Friday, July 04, 2014
Maybe it was messier than we thought, some scientists now say. Big brains, long legs and long childhoods may have evolved piecemeal in different spots, in response to frequent swings in climate.
Thursday, June 12, 2014
Evidence from bone growth now suggests that T. rex and its kin had the best of both worlds. Their muscles and nerves fired fast like ours, but they burned energy slowly, more like lizards do.
Tuesday, June 10, 2014
Pluck the silk of a spider web and it vibrates like a guitar string, scientists say. By strumming the strands and detecting the tune via sensors in its legs, a spider gets key information.
Thursday, May 29, 2014
Large mammal migration in Africa has generally been hindered by the subdivision and fencing of land. But this one remains possible because it takes place in a unique, multi-country wildlife corridor.
Tuesday, May 27, 2014
Climate change in the West is luring rainbow trout to higher elevations, where the fish are mating with native cutthroats, genetic evidence shows. Biologists and anglers worry cutthroats could vanish.
Thursday, May 22, 2014
Scientists who track carbon say the way it cycles from the atmosphere back to earth and into plants and animals has apparently changed. It could be the whole planetary carbon treadmill is speeding up.
Friday, May 09, 2014
Nir Kalron was once an Israeli commando, then private security consultant to African leaders, and a dealer of legal arms. Today he's working with African locals to hunt ivory poachers via satellite.
Thursday, May 08, 2014
Andrea Turkalo spent 22 years in central Africa, studying rare forest elephants. Then civil war forced her to flee — and poachers killed many of the elephants she'd shared a life with.
Wednesday, April 16, 2014
The Smithsonian is set to unpack something it's never had before: a rare, nearly complete Tyrannosaurus rex skeleton. It's a gift from a Montana museum that says this T. rex deserves to be famous.
Tuesday, April 01, 2014
The world's biggest extinction some 250 million years ago wiped out 90 percent of all living things. What caused it has puzzled scientists, and now they think microbes may have done it.
Thursday, March 20, 2014
OK, maybe it just munched vegetation, small animals and eggs. But this newly named dino looked like a cross between a chicken and a bulked-up ostrich. Five-inch claws? We'd have stayed out of its way.
Sunday, December 29, 2013
Archaeologists are now mapping a wall in eastern China that is as much as 15 feet tall in some places, and predates the more famous barrier by 300 years. Hundreds of miles long, it was likely erected to keep neighboring Chinese dynasties from invading each other, historians say.
Monday, November 11, 2013
Super Typhoon Haiyan devastated the Philippines, destroying whole towns, killing thousands and displacing more than 600,000 people — and it raises questions about emergency policies and realities in Pacific coastal nations.
Monday, November 04, 2013
Huge stone slabs weighing up to 300 tons that now reside in Beijing's Forbidden City were slid more than 40 miles in 15th- and 16th-century China over water-lubricated ice roads in the dead of winter. Though spoked wheels had been around for almost 3,000 years, the ice roads were smoother and required less manpower.
Wednesday, October 30, 2013
It's been a year since Hurricane Sandy knocked the mid-Atlantic states for a loop. Scientists say that as sea level rises, such storms are likely to occur more often. But the new, more realistic flood maps could boost flood insurance rates. Will politics trump science?
Friday, September 06, 2013
Scientists report in the journal Nature Geoscience that they've uncovered the largest volcano on Earth in the Northwest Pacific Ocean, about 1,000 miles east of Japan. In fact it's one of the largest in the solar system, second only to Olympus Mons on Mars. Scientists have been studying the massive structure for decades, but now are confirming it's a single volcano about the size of New Mexico. It rises about four miles off the sea floor, but doesn't break through the ocean surface. Called Tamu Massif, it hasn't erupted in more than 130 million years, helping to keep its true nature secret.