Amazing Marble Canyon fossil site

New Burgess Shale fossil site found in B.C.'s Kootenay National Park

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  • Ebola Epidemic: How Bad Can It Get Sep. 19, 2014 3:57 PM This week, we speak to Laurie Garrett, a Pulitzer Prize-winning science writer who's studied previous Ebola outbreaks, to find out how things got so bad - and how much worse they may still get.