Modern birds are dinosaurs without toothy jaws, and with bigger brains. Newly published research fills in some of the missing links in their evolution.
Global warming has so far seen a gradual rise in average temperatures. But that may change, with extreme variations. And poor countries could bear the brunt of it.
The bill would make most abortions illegal after a fetal heartbeat can be detected. Republican Gov. Kim Reynolds has not said whether she will sign the measure.
Lung surfactant coats tiny air sacs in the lung. Without it, every breath is a struggle, like blowing up millions of little balloons. With surfactant, breathing is as easy as blowing soap bubbles.
California is leading a lawsuit challenging the Trump administration's plan to weaken car emissions standards. EPA chief Scott Pruitt says the rules, designed to fight climate change, are too strict.
Before Scott Pruitt became the Administrator of the Environmental Protection Agency, his political career was guided in large part by his Southern Baptist faith and a faith-based agenda.
Australian scientists have reported that a spider — assumed to be the world's oldest — has died at 43, outliving its nearest rival by 15 years. The arachnid is believed to have survived for so long by sticking to one protected burrow its entire life and expending minimal energy.
Many consumers don't yet understand the label, but grocery stores are now buying from "salmon-safe" farms, which help protect fish by banning pesticides and keeping manure out of the land's waterways.