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New findings on Alzheimer's disease could lead to ways to prevent and treat the condition, The Scripps Research Institute announced Friday.

Why would a Republican candidate appear on a campaign flier that endorses a Democratic President? The Investigations Desk takes a closer look at why Gary Kreep appears on campaign mailers with Barack Obama. Kreep, who won his race for Superior Court Judge, has serious doubts about whether Obama is a U.S. citizen.

New rules going into effect July 1 will limit first-year medical residents to 16-hour shifts in the hopes of reducing the number of errors made by fatigued interns. But some say residents gain invaluable experience through longer hours and managing the fatigue that inevitably comes with practicing medicine.

Airs Wednesday, July 27, 2011 at 9 p.m. on KPBS TV

Science long ago proclaimed Darwin's theory of evolution a winner. And in honor of his 200th birthday, England is issuing commemorative stamps, coins — even quilts — in honor of its hero. But in parts of the U.S., Darwin's theories remain socially controversial.

Americans Venkatraman Ramakrishnan and Thomas Steitz, and Israeli Ada Yonath won Wednesday for mapping ribosomes, the protein-producing factories within cells, at the atomic level. Their work has been fundamental to the scientific understanding of life and has helped researchers develop antibiotic cures for various diseases.

As part of our monthly series on ethics in science, we'll explore the current research HIV prevention. We'll look at how that research balances protecting individual rights verses the public's health.

In 1979, when Jim Stigler was still a graduate student at the University of Michigan, he went to Japan to research teaching methods and found himself sitting in the back row of a crowded fourth-grade math class.

Scientists have begun cleanup efforts in some of the regions that were most affected by oil from the BP spill last April. They're trying to establish which methods — if any — work best.

Drones are no longer the sole province of the U.S. military and intelligence agencies. They are starting to appear in U.S. skies. Police are employing them to fight crime. Enthusiasts are making their own at home. Rules governing their use are changing, and civil liberties groups are calling for privacy restrictions.