By capturing solar 'sneezes' of high-energy charged particles, the Van Allen Belts provide a prime example of how the earth and its space environment are designed to allow and protect life.
Everyone is understandably fascinated by dinosaurs, but we must separate the empirical facts of their nature from evolutionary stories told about them.
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 […]