Biotech company AquaBounty has not yet received FDA approval for its fast-growing, genetically-modified salmon. Biotechnologist Alison Van Eenennaam and environmental scientist Anne Kapuscinski discuss the food safety and environmental concerns associated with transgenic fish.

When they both worked at Princeton, Howard Stone and Jeff Aristoff used to play basketball at lunchtime. One day, when Dr. Stone was warming up with his jump rope, the two wondered if anyone had mathematically modeled the shape of the rope. The two researchers decided to give it a whirl.

Presenting at a meeting of the American Society of Tropical Medicine and Hygiene, researchers said bedbugs can survive many generations of inbreeding, allowing one pregnant female to cause a building-wide infestation. Biologist Rajeev Vaidyanathan discusses that study, and another on pesticide resistance.

Frustrated by what some see as U.S. foot-dragging on climate policy, an American college student interrupted U.S. envoy Todd Stern Thursday during his remarks at the climate conference in South Africa. Later, Stern emphasized that the U.S. has been working hard to advance global climate policy into the 21st century.

For the first time, a government study has tied contamination in drinking water to an advanced drilling technique commonly known as "fracking." EPA scientists found high levels of chemicals used in hydraulic fracturing in the ground water of a small Wyoming town.

A study released this week found that many eco-labels for farmed seafood don't guarantee the fish was raised in a way that protects the marine environment.

Scientists have found what they say is the world's oldest bed: a 77,000-year-old grass and leaf mattress in a cave in South Africa. And the people who made it were crafty: Atop layers of sedge grass were leaves from a plant known to repel insects — key for living in buggy, dank caves.