A signature in rock that was thought to come from extraterrestrial impacts could have been caused by plain old lightning. “Impact Geologists, Beware!” That’s the headline of a short paper in Geophysical Research Letters by H. J. Melosh of Purdue. His subtitle is, “A Cautionary Tale for Impact Geologists.” Why the alarm? Another “proxy” for […]
Here's a collection of quick takes on interesting developments in the science news, from Saturn to a possible cure for malaria; from your liver to Sunday funnies.