Reporting in Science, researchers write of an experiment in which rats worked to open the cages of trapped rats, but not empty or dummy-filled cages. Author Peggy Mason discusses empathy in non-primates, and the value rats place on freeing a companion--about equal to that of a stash of chocolate chips.
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.
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.
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