Climate

by Revilo P. Oliver THE New Scientist for 20 January 1990 is especially interesting. It contains on one page the latest in a long series that describe the dire effects that the much-touted “greenhouse effect” will have on the world, unless the industrial production of carbon dioxide is…

A FARAWAY SUPERNOVA explosion may have contributed to a minor mass extinction here on Earth 2.59 million years ago, a new study suggests. (ILLUSTRATION: Artist’s illustration of the supernova remnant known as 1993J, which came from a double-star system.) Fast-moving, charged particles…