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Do other planets like Earth exist? Since it launched in 2009, NASA’s Kepler space observatory has revealed billions of Earth-size planets. Now scientists are looking for signs of water on these planets. Watch a video and read about their search.

Explore new technologies driving a digital health revolution to hack and track our lives.

Once nearly extinct, California condors are making a steady recovery. But a new threat– lead poisoning from old bullets– is slowing progress, leaving scientists between wildlife preservation and the politics of hunting.

From KQED Education Do Now: On Tuesday, November 4, 2014 three counties in California will decide by ballot whether or not to ban hydraulic fracturing, otherwise known as “fracking.” It’s steeped in controversy, from the amount of water it uses to how and where that water–and added chemicals–are eventually disposed. Should fracking be banned? Why or why not?

Learn about Proposition One, which would issue billions in bonds for water projects.