The established theory about the route by which Ice Age peoples first reached the present-day United States has been challenged by an unprecedented study which concludes that their supposed entry route was "biologically unviable".
Whether growing along the rim of the Grand Canyon or living in the mist with California's coastal redwoods, Douglas fir trees are consistently sensitive to drought conditions that occur throughout the species' range in the ...
Research by environmental scientists at the Harvard School of Engineering and Applied Sciences (SEAS) brings bad news to the western United States, where firefighters are currently battling dozens of fires in at least 11 ...
Interracial marriage has grown in the United States over the past few decades, and polls show that most Americans are accepting of mixed-race relationships.
A Purdue University research team has found that the center of tornado activity in the United States has shifted in recent decades, and this shift is possibly influenced by climate change.
Scientists from India, the United States and Japan have struck upon a large natural gas deposit in the Bay of Bengal, the first potentially producible discovery of its kind in the Indian Ocean.
Federal authorities say genetically modified wheat that's not approved for sale or production in the United States has been found growing in a field in Washington state.
A tiny, invasive whitefly that is resistant to pesticides and carries crop-devastating viruses has been found outdoors in the United States for the first time, raising concerns among fruit and vegetable growers.
If you are a male barn swallow in the United States or the Mediterranean with dark red breast feathers, you're apt to wow potential mates. But if you have long outer tail feathers in the United States, or short ones in the ...
Police officers are trained to protect and serve the public. They are taught to evaluate a dangerous situation in a split second and act in ways that might best keep both the public and themselves safe.