Earth’s driest desert once had lakes
The driest desert on Earth may once have had lakes and wetlands, scientists report. They have found the remnants of freshwater plants and animals buried in the arid plains of…
Tags: Once
Dogs may have been domesticated not once, but twice
Dogs may have been domesticated not once, as widely believed, but twice, once in Europe and once in Central Asia or China, a major study said Thursday. Scientists have debated…
Once dismissed, shark attacks may hit new record in 2016
As the summer beach season opens in the United States, at least one expert is predicting an increase in shark attacks around the world this year that will surpass last…