The Obama administration has proposed rules for limiting greenhouse gases, but many of the details must still be set by states, leaving utilities unsure about specifics they'll be expected to achieve.
A medical procedure uses material from three people to target problems in mitochondria, the energy-producing organelles that have their own DNA.
Advances in greenhouse technology have made growing flavorful tomatoes year-round easier. And scientists say climate change may soon make it harder to grow delicious tomatoes outdoors in fields.
Honey is nature's gift. It's natural. Made by bees. Chocolate is the opposite, a great engineering creation that could, just possibly, just maybe, help save our planet.
Due to malnourishment, some 200 million toddlers in poor countries have under-developed brains. A study in the journal Science suggests more play time with mom can dramatically reverse the damage.
By testing for radiation, detectives showed that wine bottles purportedly from Thomas Jefferson's collection were fake. And with wine fraud rising, authentication is getting even more sophisticated.