The latest outbreak of severe acute respiratory syndrome (SARS) in China, with eight confirmed or suspected cases so far and hundreds quarantined, involves two researchers who were working with the ...
In 1921, a Swiss miner named Tom Zwiglaar made an extraordinary find. While working in a lead and zinc mine in what is now Zambia, he stumbled across a remarkably preserved skull. The specimen, now ...
In 2007, while searching for signs of ancient human inhabitants of the Andes mountain range, more than 4,300 meters above sea level, Kurt Rademaker came across a field littered with chunks of obsidian ...