Duo was fatally hit by a Tesla Cybertruck, the language-learning company announced this week. The snarky owl has been the face of Duolingo for over a decade. Why his sudden demise, and what's next?

The smallest is the two-inch-long bee hummingbird. Everything about the anatomy of a bird reflects its ability to fly. The wings, for example, are shaped to create lift. The leading edge is ...

A brand-new F-35 costs about $80 million. The Franken-bird project, however, will cost U.S. taxpayers just $6 million—less than one-tenth the cost of a brand-new replacement jet.

After 17 years with its iconic blue bird logo that came to symbolise the broadcasting of ideas to the world, billionaire Elon Musk renamed Twitter as X and unveiled a new logo, symbolising his foc ...