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De-extinction technology could soon bring back lost species — or preserve endangered ones. In her new book, evolutionary biologist Beth Shapiro explores the scientific and ethical challenges.

Google has been researching the possibility of ranking search results based on established facts. Were this to become the norm, it would have huge implications for future discourse, says Adam Frank.

Two new studies published in the journal Nature point to a connection between a class of insecticides known as neonicotinoids and a decline in bee health. What's bad for bees is bad for crops, too.

Over 1,600 acres of old-growth rainforest have burned in Washington's Olympic National Park. As Ashley Ahearn of KUOW reports, the wildfire is expected to persist through the rest of the summer.

Peru brought its tradition of praying for alpacas to the U.S. And there's good reason to wish the animals well. Their fiber — softer and warmer than wool — provides a livelihood for many Peruvians.

A proposal calls for countries to reduce the death rate among 50-to-69-year-olds from diseases like cancer and stroke. So are 70-year-olds out of luck?

China is no stranger to ethnic violence, but militants are now using suicide attacks and targeting civilians. Beijing say foreign Islamist influence is behind the new, more sophisticated tactics.

For more on the new pollution regulations, Robert Siegel speaks with Environmental Protection Agency Administrator Gina McCarthy about her agency's carbon emission plan.

Next week President Obama will unveil his plan for the first nationwide program to control greenhouse gas emissions from the electrical power sector. States that have already started to control such emissions say it's not as hard as they thought it would be. They've ended up exceeding their goals, largely because of abundant natural gas, which burns more cleanly than coal.

The Obama administration has proposed rules for limiting greenhouse gases, but many of the details must still be set by states, leaving utilities unsure about specifics they'll be expected to achieve.