The world’s largest virus has been discovered off the coast of Las Cruces, Chile. Appropriately named Megavirus chilensis, it is about 10 to 20 times larger than the average virus and 6.5% bigger than its nearest competitor, the Mimivirus. The Megavirus measures about .7 micrometers (thousandths of a millimeter) in diameter and is an oddity among its virus brethren, which are usually smaller...