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The Gates Foundation has granted engineers more than $3 million to develop cheap, high-tech toilets that don't need water or electricity. To test these supercommodes, the foundation has purchased 50 pounds of soybean paste that resembles human waste.

STILLWATER, Okla. (AP) — Authorities say a 53-year-old Oklahoma State University employee fatally shot himself in a restroom at a Stillwater…

Though more employers are encouraged to offer health insurance through the Affordable Care Act, bad employee health habits, like poor diet and smoking, are causing health care costs to skyrocket. To combat this expensive trend, many employers are using cash to encourage better health.

Science fiction hero Tom Swift has amazed children with his incredible inventions since combustion and electricity drove the nation into a new era. These stories captured a cultural love of science and inspired such famous figures as Steve Wozniak and Isaac Asimov — all while predicting new technologies decades in advance.

The Curiosity rover nailed its dismount, following a complex routine of aerial acrobatics last weekend. Now, after the thrill of the picture-perfect landing, scientists are eager to start the real mission. John Grotzinger, project scientist for the Mars Science Laboratory mission, describes the immediate goals for the Curiosity rover, now in Gale Crater on Mars.

Curiosity carries one of the most "complicated instruments ever to land on the surface of another planet," according to NASA. The rover's "Sample Analysis at Mars" — which can take dirt and crushed rock from the Red Planet and analyze those samples for indicators of alien life — was partly built in the Big Apple by Honeybee Robotics. Flora Lichtman got a tour of the facility.

Writer and humorist David Rakoff, who died Thursday at the age of 47, wrote with a perfect balance of wit and gravity about the cancer that would ultimately take his life. Fresh Air remembers Rakoff with excerpts from two interviews in 2001 and 2010.

Researchers are attempting to treat Alzheimer's disease with antibodies, hormones and gene therapy. But will any lead to a cure? Ronald Petersen, director of the Mayo Alzheimer's Disease Research Center, talks about the latest research, and whether there might someday be a vaccine to protect the aging brain.

The lawsuit alleges that the Homeland Security secretary has turned the agency into a "frat house."

Colorado Supporting Our Troops sends care packages to members of the military. The boxes contain everything from lip balm to licorice.