A 1992 copy of the world's first Web page. British physicist Tim Berners-Lee invented the World Wide Web in 1989. Fabrice Coffrini/AFP/Getty Images hide caption

itoggle caption Fabrice Coffrini/AFP/Getty Images

The Hadean zircons --€ the” oldest bits of Earth yet found --€” were discovered near here, on a sheep ranch in Jack Hills, Western Australia. Courtesy of University of Wisconsin hide caption

itoggle caption Courtesy of University of Wisconsin

New research finds a close connection between the flu that devastated the horse population in North America in the 1870s and the avian flu of that period. Hulton Archive/Getty Images hide caption

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Video games with lots of action might be useful for helping people with dyslexia train the brain's attention system. iStockphoto hide caption

itoggle caption iStockphoto

Climbing robots, modeled after termites, can be programmed to work together to build tailor-made structures. [Image courtesy of Eliza Grinnell, Harvard School of Engineering and Applied Sciences hide caption

itoggle caption [Image courtesy of Eliza Grinnell, Harvard School of Engineering and Applied Sciences

Until recently, finding characteristic stone and bone tools was the only way to trace the fate of the Clovis people, whose culture appeared in North America about 13,000 years ago. Sarah L. Anzick/Nature hide caption

itoggle caption Sarah L. Anzick/Nature

The National Ignition Facility's 192 laser beams focus onto a tiny target. LLNL hide caption

itoggle caption LLNL

A customer shops for milk at a Safeway in Livermore, Calif. Although it may seem counterintuitive, there's growing evidence that full-fat dairy is linked to reduced body weight. Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images