Christopher Joyce

Christopher Joyce appears in the following:

Tiny, Ancient Tree-Dweller Was One Of Earth's Earliest Primates

Wednesday, June 05, 2013

The origin of the first primates — the group that includes humans, apes and monkeys — is thought to lie in the deep past, about 55 million years ago.

Fossils from that period are rare. But now, there's an exciting new one. It's called Archicebus achilles, roughly meaning "beginning long-tailed ...


Big-Mouthed Toucans Key To Forest Evolution

Friday, May 31, 2013

Brazil is a paradise for birds; the country has more than 1,700 species. Among them is the colorful toucan, a bird with an almost comically giant bill that can be half as long as its body. There are lots of different types of toucan — red-breasted, channel-billed, keel-billed, saffron toucanet ...


With Rising Seas, America's Birthplace Could Disappear

Tuesday, May 14, 2013

By the end of the century, the birthplace of America may be underwater.

The first successful English colony in America was at Jamestown, Va., a swampy island in the Chesapeake Bay. The colony endured for almost a century, and remnants of the place still exist. You can go there and ...


Bones Tell Tale Of Desperation Among The Starving At Jamestown

Wednesday, May 01, 2013

"First they ate their horses, and then fed upon their dogs and cats, as well as rats, mice and snakes."

So says James Horn of the historical group Colonial Williamsburg, paraphrasing an account by colony leader George Percy of what conditions were like for the hundreds of men and ...


How Doctors Would Know If Syrians Were Hit With Nerve Gas

Tuesday, April 30, 2013

President Obama affirmed Tuesday that there's evidence Syrians have been attacked with chemical weapons — in particular, nerve gas.

But that's not the same as proof positive.

"We don't know how they were used, when they were used, who used them," Obama said. "We don't have a chain of ...


What's Behind The 'Fairy Circles' That Dot West Africa?

Thursday, March 28, 2013

There's a mystery in West Africa that's puzzled scientists for years. Strange circles of bare soil appear in grassland; they're commonly called "fairy circles." These naturally occurring shapes last for decades, until the grass eventually takes over and the circles fade.

Now German scientists think they have an explanation — ...


Is The Sky The Limit For Wind Power?

Wednesday, March 27, 2013

Wind power is growing faster than ever — almost half of the new sources of electricity added to the U.S. power grid last year were wind farms.

But is the sky the limit? Several scientists now say it's actually possible to have so many turbines that they start to ...


Could Tapping Undersea Methane Lead To A New Gas Boom?

Friday, March 15, 2013

The new boom in natural gas from shale has changed the energy economy of the United States. But there's another giant reservoir of natural gas that lies under the ocean floor that, theoretically, could dwarf the shale boom.

No one had tapped this gas from the seabed until this week, ...


Past Century's Global Temperature Change Is Fastest On Record

Friday, March 08, 2013

There's plenty of evidence that the climate has warmed up over the past century, and climate scientists know this has happened throughout the history of the planet. But they want to know more about how this warming is different.

Now a research team says it has some new answers. It ...


Elephant Poaching Pushes Species To Brink Of Extinction

Wednesday, March 06, 2013

A new study of Central African forest elephants has found their numbers down by 62 percent between 2002 and 2011. The study comes as governments and conservationists meet in Thailand to amend the Convention on International Trade in Endangered Species.

African forest elephants have been in trouble for a while, ...


New York Planners Prep For A 'New Normal' Of Powerful Storms

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 i...

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In Ancient Ore. Dump, Clues To The First Americans?

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 ...


With Gas Boom, Pennsylvania Fears New Toxic Legacy

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. Peo...


Pollution Playing A Major Role In Sea Temperatures

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 o...


Endangered Turtle Survives Trans-Atlantic Journey

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 Vasc...


Climate Strategists: To Cut Emissions, Focus On Forests

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 fr...


The Deep-Sea Find That Changed Biology

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 ...