Science, Tech & Environment

This backcountry cook you've never heard of is a legend at Yosemite National Park

Ever heard of Sing Peak in Yosemite National Park? Turns out, it has nothing to do with music. It honors the park's Chinese immigrant past — and an amazing backcountry chef named Tie Sing. A park ranger at Yosemite did some digging and unearthed the hidden history of Sing and the immigrants who helped create the park we know today.

Science, Tech & Environment

Japanese citizen radiation-tracking program goes big time, spawns U.S. branch

In the wake of the the meltdown of the Fukushima Daiichi nuclear plant in Japan two years ago, a great deal of radiation was released into the atmosphere. So a group of Japanese residents set out to determine where the radiation was, block-by-block. Now they hope to do the same thing for air pollution in two U.S. cities.