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Once And Future Nut: How Genetic Engineering May Bring Back Chestnuts

The American chestnut is poised to return — as a bionic, blight-resistant tree. Scientists hope to plant about 10,000 transgenic plantlets to pollinate trees in the "wild."

Worried You Have An STD? This App Helps You Quietly Find Out

Planned Parenthood has an app that offers discreet help for Californians seeking to get tested for chlamydia or gonorrhea.

DNA Tracking Of Ivory Helps Biologists Find Poaching Hotspots

To stop elephant slaughter in Africa, zoologist Sam Wasser spent years extracting DNA from elephant dung and tissue. Much of the world's poached ivory, he discovered, comes from just two hotspots.

Pope Francis Uses Encyclical To Deliver Moral Message On Climate Change

NPR's Melissa Block speaks to John Carr of Georgetown University's Initiative on Catholic Thought and Public Life about Pope Francis' call to moral action on climate change.

Both Catholics, Non-Catholics Applaud Pope For Bold Remarks On Climate Change

Catholics across the nation are reacting to a sweeping encyclical issued by Pope Francis on the issue of climate change. The 184-page papal letter explains that it is a global problem with far reaching environmental and social ramifications.

Pope Francis Calls For Urgent Action On Climate Change In Encyclical

Pope Francis blames climate change on apathy, political shortsightedness and a pursuit of profits. In a papal encyclical, he calls climate change one of the principal challenges facing humanity today.

In Search Of Edible Weeds: Adventures In Urban Foraging By App

An expert forager has a video and an app for finding weeds to make the ultimate locally grown salad. But even a master foraging app might not lead an amateur to success.

NASA: Europa Spacecraft Goes Into Development Phase

The probe would make dozens of flybys of the Jovian moon in an effort to study its vast subterranean ocean that could harbor life.

DNA Confirms Kennewick Man's Genetic Ties To Native Americans

The new evidence suggests the ancient skeleton is closely related to members of a Washington state tribe. The findings are likely to rekindle an old debate between scientists and Native Americans.

Surprise! Some Job-Based Health Plans Don't Cover Hospitalization

Better read the fine print of your health insurance policy. An unlucky woman in Minnesota learned her policy was woefully skimpy only after she fell while walking her dogs, and faced a $19,000 bill.