Neil deGrasse Tyson is known for using his Twitter account to tackle everything from urgent scientific issues to pop culture. But on Sunday, he took to social media to wonder about bears ― and, in particular, one potential feature of a bear-led world. The astrophysicist, author, host of “Star Talk” and “Cosmos,” and director of the Hayden Planetarium in New York, wrote:

Source: Huffington Post January 22, 2018 08:48 UTC