Facing Reality About Life on Other Planets, 6: Chemistry and Probability
September 18, 2017
In this final segment about habitability of exoplanets, Dr Henry Richter looks at chemistry and probability.
Crinoid Pigment: 240 Million Years and No Evolution
February 19, 2015
Pigments from crinoids fossilized in early Mesozoic strata are identical to modern counterparts.
Without Bromine, There Would Be No Animals
June 13, 2014
A 28th element has proven to be essential for life: bromine.