Latest Mark Boslough Stories
Researchers are contradicting one hypothesis that comet explosions may have ended the 9,000-year-old Clovis culture.
An asteroid that struck Siberia and caused catastrophic damage in June 1908 wasnâ€™t as large as previously assumed, according to Sandia National Laboratories physicist Mark Boslough.
The stunning amount of forest devastation at Tunguska a century ago in Siberia may have been caused by an asteroid only a fraction as large as previously published estimates, Sandia National Laboratories supercomputer simulations suggest.
- To swell, as grain or wood with water.