It’s no secret that parrots are smart. Aside from mimicking human speech, they display some impressive problem-solving abilities. But unlike other brainy birds such as crows, they’re not regular tool ...
The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...
About 7,000 years ago, a small group of people sat around a fire, next to a small lake in what is now the Nefud Desert of northern Saudi Arabia. We found some of the tools they left behind—and on ...
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