Christopher Joyce http://kalw.org en A T. Rex Treks To Washington For A Shot At Fame http://kalw.org/post/t-rex-reveal-itself-smithsonian This week, scientists at the Smithsonian's National Museum of Natural History will start unpacking some rare and precious cargo. It's something the Smithsonian has never had before — a nearly complete skeleton of a Tyrannosaurus rex.<p>Most people don't know it, but the T. rex that's standing tall in the Natural History Museum in Washington, D.C., is a fake — a cast, a copy of the bones. It's an accurate replica, but for decades the Smithsonian has coveted a real skeleton of a T. Wed, 16 Apr 2014 07:43:00 +0000 Christopher Joyce 42438 at http://kalw.org A T. Rex Treks To Washington For A Shot At Fame Methane-Producing Microbes Caused 'The Great Dying' http://kalw.org/post/methane-producing-microbes-caused-great-dying Transcript <p>STEVE INSKEEP, HOST: <p>It's MORNING EDITION from NPR News. I'm Steve Inskeep.<p>DAVID GREENE, HOST: <p>And I'm David Greene. Good morning. The biggest extinction the Earth has ever seen took place 250 million years ago and it remains something of a mystery. Scientists suspected giant volcanoes or perhaps an asteroid caused it, but NPR's Christopher Joyce has seen new research suggesting the cause might not have been so cataclysmic - maybe something much more subtle.<p>CHRISTOPHER JOYCE, BYLINE: It's sometimes called the Great Dying. Tue, 01 Apr 2014 10:46:00 +0000 Christopher Joyce 41744 at http://kalw.org The 500-Pound 'Chicken From Hell' Likely Ate Whatever It Wanted http://kalw.org/post/500-pound-chicken-hell-likely-ate-whatever-it-wanted For the past decade, dinosaur scientists have been puzzling over a set of fossil bones they variously describe as weird and bizarre. Thu, 20 Mar 2014 08:31:00 +0000 Christopher Joyce 41196 at http://kalw.org The 500-Pound 'Chicken From Hell' Likely Ate Whatever It Wanted When Big Carnivores Go Down, Even Vegetarians Take The Hit http://kalw.org/post/when-big-carnivores-go-down-even-vegetarians-take-hit Big, fierce animals — lions and tigers and bears, for example — are relatively scarce in nature. That's normal, because if you have too many, they'll eat themselves out of prey.<p>But top predators are now so rare that many are in danger of disappearing. That's creating ripple effects throughout the natural world that scientists are still trying to figure out.<p>What they're exploring is ecology — the interplay of animals and plants in nature. It's not rocket science. Fri, 10 Jan 2014 08:00:00 +0000 Christopher Joyce 38218 at http://kalw.org When Big Carnivores Go Down, Even Vegetarians Take The Hit Looks Like The Paleo Diet Wasn't Always So Hot For Ancient Teeth http://kalw.org/post/looks-paleo-diet-wasnt-so-hot-ancient-hunters-teeth One of the hinge points in human history was the <a href="http://www.npr.org/blogs/thesalt/2013/07/08/198453031/farming-got-hip-in-iran-some-12-000-years-ago-ancient-seeds-reveal">invention of agriculture</a>. It led to large communities, monumental architecture and complex societies. It also led to tooth decay.<p>When hunter-gatherers started adding grains and starches to their diet, it brought about the "age of cavities." At least that's <a href="http://www.npr.org/blogs/health/2013/02/24/172688806/ancient-chompers-were-healthier-than-ours">what a lot of people thought</a>. Mon, 06 Jan 2014 20:22:00 +0000 Christopher Joyce 38047 at http://kalw.org Looks Like The Paleo Diet Wasn't Always So Hot For Ancient Teeth