Today's selection of science news. Links are normally to press releases on EurekAlert (at the bottom end I may also add a couple of newspaper stories). I include quotes from the summary (using quotation marks) in cases where the title alone doesn't reveal what the story is about. My own thoughts appear without quotation marks, if I have any.
astrobiology
'Fettuccine' may be most obvious sign of life on Mars, researchers report
"A rover scanning the surface of Mars for evidence of life might want to check for rocks that look like pasta, researchers report in the journal Astrobiology. The bacterium that controls the formation of such rocks on Earth is ancient and thrives in harsh environments that are similar to conditions on Mars, said University of Illinois geology professor Bruce Fouke, who led the new, NASA-funded study."
ecology
Chimps caught crabbing
humans
Declining fertility rates may explain Neanderthal extinction, suggests new model
Early humans deliberately recycled flint to create tiny, sharp tools
Humans used northern migration routes to reach eastern Asia
Thursday, May 30, 2019
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