Cold-War exclusive: Cuban lizards invade Florida
Result: a genetic change after just 20 generations!
Behavior changes when animals compete — a perfect setup for evolution through natural selection. More »
Ebola on the march!Does a pathogen win by softening its bite? More »
Secrets of the sidewinderA soft touch and a subtle motion climb a sandy hill More »
Smokin' hot! Altered tobacco plants point toward race-car photosynthesisGenetic engineering moves genes from cyanobacteria to plants More »