It's easy to forget it sometimes, but the ecosystem in the D.C. region is among the most biologically diverse in the United States. New data will give conservationists a better idea of how to preserve that diversity in the years and decades ahead.
After a frightening article a few weeks ago in The New Yorker magazine about a potentially devastating earthquake in the Pacific Northwest, there's been a run on survival supplies there. NPR talks to the maker of survival kits about his business.
Author Stephen Petranek says within the next 20 years humans will live on Mars. The race to get there, how to make it habitable and other big questions about traveling to and living on this next frontier.
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