Morwood, Mike
Diminutive hominins make a big evolutionary point: Humans aren 't exempt from natural selection.
Petit, Charles W.
More than a year after their predicted demise, NASA 's Mars rovers Spirit and Opportunity keep going and going...
Wolinsky, Cary
Fischman, Josh
Our ancestors had already ventured out of Africa 1.8 million years ago - and settled in the republic of Georgia.