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Jorge Odon became a world celebrity — and the subject of a 'Jeopardy' question even — with his invention. But it hasn't made it to market yet. What's the timeline?

A new study on ancient human remains finds evidence for the habitual use of betel nuts, dating back to the Ice Age. The finding offers some of the oldest archaeological evidence of psychoactive drug use, and potential insights into how use of betel nuts, now popular for their stimulant effects, evolved.

Scientists are trying to predict what might happen if genetically modified salmon escaped growth facilities. It's a scenario often raised by critics who don't want the FDA to approve sale of the fish.

Textbook prices are high and rising, yet one obvious alternative to paying for paper — the e-textbook — just hasn't caught on, even with a new, digital-savvy generation of students.

Humans haven't cornered the market on heroism. As anthropologist Barbara J. King notes, other animals ranging from dogs and cats to elephant seals and African pouched rats can win our hearts, too.

Best known for its role in the 1957 school desegregation crisis, Little Rock Central High School saw hundreds of students walk out of class on Wednesday to protest gun violence.

Sunday January 31st is the deadline in most states to buy health insurance through the Affordable Care Act. Federal officials are reaching out to those previously uninsured, with a focus on Hispanics.

Immigrant advocates across the country are accusing federal immigration authorities of using deportation as a tool to silence activists. Federal lawsuits have identified 16 undocumented immigrant leaders who have been arrested nationwide.

The U.S. appetite for shrimp is often fed in unsavory ways, with seafood produced unsustainably, sometimes with slave labor. In New York's Hudson Valley, an indoor aqua farm is raising an alternative.

More than 23,000 have come so far, with California a top destination — especially the Los Angeles suburbs in the San Gabriel Valley. Many teens live with host families and attend private schools.

The people in a tiny town in Greenland manage to stay (reasonably) happy even without the sun. But they're sure glad to have it back.

The way the National Institutes of Health doles out research grants accentuates booms and busts in the financing of scientific research. More variety in the length of grants could help.