News tagged with sedimentary layers

NASA officials remember Mars rover Spirit

Scientists and engineers gathered Tuesday at NASA's Jet Propulsion Laboratory to remember the legacy of the hard-luck rover Spirit that came through in the end with geologic evidence that Mars was once a warm ...

Jul 20, 2011
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New evidence links humans to megafauna demise

(PhysOrg.com) -- A new scientific paper co-authored by a University of Adelaide researcher reports strong evidence that humans, not climate change, caused the demise of Australia's megafauna -- giant marsupials, ...

Jan 21, 2010
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