Birds, by design, tend to be small, light and streamlined. Yet there are some that push the boundaries of size. Here is the avian world’s best example of an ultra-heavyweight flyer. Birds of prey are ...

California condors are moving farther into the East Bay. Seven of the endangered birds flew north into Alameda and Contra Costa counties on a circuitous aerial tour on Aug. 18, the conservation group ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. Engineers are finding new ways to make wind turbines more ...