Twit-t-who? The green owl who was the logo of language-learning app Duolingo is no longer.The US company behind the ...

New research by scientists at the American Museum of Natural History and the University of Nebraska-Lincoln reports, for the ...

Chief Financial Officer Razvan Radulescu recently sold 2,848 shares of the company’s common stock, totaling approximately $108,565. The shares were sold at an average price of $38.12 per share.

Henry Shen shared a pair of photos of Great Blue Herons at Don Edwards San Francisco Bay National Wildlife Refuge in Fremont, ...