Christopher Joyce appears in the following:
Friday, May 31, 2013
As humans have cut into Brazil's forests, the toucan population has taken a dive. The trees, in turn, have changed, too: Without large-billed birds to eat fruit with big seeds, only trees with small seeds thrive. Eventually, one scientist says, "the impacts on the forest could be quite dramatic."
Tuesday, May 14, 2013
By the end of the century, ocean levels could rise by 2 or 3 feet. That's enough to flood the colonists' first settlement at Jamestown, Va. And it's putting pressure on archaeologists to get as many artifacts out of the ground as quickly as possible — before it's too late.
Wednesday, May 01, 2013
The winter of 1609-1610 has been called the "starving time" for the hundreds of men and women who settled the English colony of Jamestown, Va. They ate their horses, their pets — and, apparently, at least one person. Scientists say human bones recovered from the site provide the first hard evidence that the colonists may have resorted to cannibalism.
Tuesday, April 30, 2013
An international team of doctors is helping Syrian health workers recognize the signs of a chemical attack. They're also teaching them how to collect and preserve tissues as potential evidence if war crimes charges are brought.
Thursday, March 28, 2013
Fly from Angola down to South Africa and you'll see thousands of circles of bare dirt covering the land. They're up to 30 feet across and ringed by tufts of grass. The origin of the shapes has long been a mystery, but researchers now say hordes of termites may be acting as engineers.
Wednesday, March 27, 2013
Building huge turbine farms too close together might significantly reduce their power, some atmospheric scientists say. The problem is "wind shadow" — the turbulence created by one big cluster of turbines that steals wind from another cluster down the road.
Wednesday, March 20, 2013
World-famous primatologist Jane Goodall has admitted to plagiarizing several passages in her upcoming book, Seeds of Hope. It's not yet clear if Goodall or her co-author Gail Hudson is responsible for the lifted passages.
Friday, March 15, 2013
A giant reservoir of natural gas lies under the ocean floor, and no one had successfully extracted it until this week. Japanese engineers pulled it up through a well from under the Pacific. But there are still lots of unanswered questions about the viability of this new gas supply.
Friday, March 08, 2013
In the past 100 years, average temperatures on Earth have changed by 1.3 degrees. Previously, that large of a swing took 5,000 years. That's the word from researchers who pored over temperature data going back to the end of the last ice age.
Wednesday, March 06, 2013
Forest elephants in central Africa are being slaughtered in record numbers for their ivory tusks, a decade-long study finds. The U.S. government and wildlife advocacy groups are struggling to slow the killings as poaching is overcoming laws and treaties intended to protect the species.
Tuesday, March 05, 2013
Forest elephants in central Africa are being slaughtered in record numbers. The most comprehensive study ever, done over a decade, shows that poaching — mostly for the Asian market for ivory — has put the forest elephant on the brink of extinction. Poaching has overcome laws and treaties to protect the species. The U.S. government and wildlife groups are struggling to slow the killing. A meeting in March of the Convention on International Trade in Endangered Species will focus on solutions. Audie Cornish talks to Christopher Joyce.
Thursday, December 13, 2012
In the wake of Superstorm Sandy, New Yorkers, local politicians and scientists face a tough decision: How to spend limited funds to defend themselves in a world where climate change is making flooding from coastal storms ever more likely.
Friday, July 13, 2012
The small projectile points seem to be 14,500 years old, the oldest direct evidence of people in America. The weapons appear to be as old or older than points made by the Clovis, who were thought to be the first in the Americas.
Monday, May 14, 2012
Industry has ruined a lot of Pennsylvania's water. Coal mining companies hammered the state, leaving behind acidic water that turned thousands of miles of streams into dead zones. People in the state are looking for ways to make sure the fracking boom doesn't deal another blow to its water.
Wednesday, April 04, 2012
Tiny particles from power plants and fires help create new clouds, which shade the oceans from the sun. This means changes in sea-surface temperatures. And that has profound effects on weather, influencing the time and amount of rainfall in West Africa, and even the number, strength and path of hurricanes.
Tuesday, January 31, 2012
The Florida Everglades is infested with Burmese pythons. To keep them from spreading, the U.S. Fish and Wildlife Service is making it illegal to import the pythons into the country, or transport them across state lines. Scientists have discovered the pythons are doing more damage than ever imagined.
Monday, December 26, 2011
The Kemp's ridley sea turtle, which hopped a ride aboard floating seaweed, made the 4,600 mile journey from the Gulf of Mexico to the shores of Portugal in 2008. Nicknamed Johnny Vasco de Gama, after the Portugese explorer, the now-rehabilitated turtle will be reintroduced into Gulf waters Tuesday.
Saturday, December 10, 2011
The basic idea is to have rich countries that emit lots of climate-warming gases pay poorer countries to keep their forests, or even expand them. That's because forests suck carbon from the atmosphere. But there's not yet a global system to make a plan like this work.
Monday, December 05, 2011
The depths of our oceans are dark, punishingly cold and utterly devoid of life. Or so scientists thought, until a team of researchers in the late 1970s stumbled upon squishy, rubbery worms, up to 7 feet long, living 8,000 feet below the surface of the Pacific.