biology conservation Features Recent Work Tennessee’s bat cave MONTGOMERY COUNTY, TENN. — The world’s first artificial bat cave is expecting the arrival of its first winged visitors.… November 27, 2012August 8, 2018
materials science Physics How to stop a speeding bullet A bullet fired into a disk of polyurethane — a type of plastic — may not burst out the other… November 26, 2012August 8, 2018