The meteor that caused at least 1,000 injuries in Russia after a startling and powerful daytime explosion one week ago has been identified as a chondrite, the most common type of meteor that falls on Earth. But that hasn't stopped a black-market economy from developing around the fragments.
The U.S. Department of Agriculture says farmers may get a record harvest of corn, and a higher supply of soybeans and wheat in 2013. The corn harvest is expected to be up nearly 40 percent over last year's drought-crippled level.
An apple a day keeps the doctor away. And, it turns out, the dentist--because that fibery skin is good for your teeth. Dentists Mark Ryder of the University of California San Francisco and Mark Wolff of New York University answer your toothy questions in this episode of our "Ask an expert" series.
A week after a meteor exploded over Russia on the same day that an asteroid swung closely past Earth, experts discuss how the potential threats posed by near-Earth objects should be addressed. Astronomers Donald Yeomans and John Tonry weigh in on how to keep the planet safe.
The book club regulars visit Gorillas in the Mist, Dian Fossey's memoir of her years studying mountain gorillas in a remote African rainforest. Gorilla expert Annette Lanjouw joins the club to give an update on how this endangered subspecies of gorilla is faring.
In Fairbanks, Alaska, residents are using wood stoves to heat their homes during the frigid winter months. But, smoke created by these wood burners is contributing to some of the worst air pollution in the country. Cathy Cahill discusses air quality in the Last Frontier.
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