Astrobiology Still Has No Biology
April 11, 2018
Number of worlds beyond Earth where life has been discovered: zero. Number of optimistic articles about life in outer space: hundreds per year.
Mars Life Hopes Reduced
August 12, 2016
Key assumptions about habitability on Mars have fallen, but astrobiologists try to keep hope alive.
Precambrian Protein Identified
June 21, 2016
They say it's almost two billion (with a B) years old, yet it resembles modern counterparts.
Crinoid Pigment: 240 Million Years and No Evolution
February 19, 2015
Pigments from crinoids fossilized in early Mesozoic strata are identical to modern counterparts.
Left-Handed Life: Is the Chirality Problem Near Solution?
October 2, 2014
Cells use only left-handed amino acids and right-handed sugars. A new hypothesis involving the weak nuclear force tries to address this asymmetry.