By Frank La Sorte and Kyle Horton Millions of birds travel between their breeding and wintering grounds during spring and autumn migration, creating one of the greatest spectacles of the natural world. These journeys often span incredible distances. For example, the Blackpoll warbler, which weighs less than half an ounce, may travel up to 1,500 […]
NASA scientists created the most complete map of Earth at night to date—showing humans in all of their electric glory. But, while the photos are magical, they also show human’s extreme effect on the planet. The map, which shows a nightly Earth as it was in 2016, was made through a composite of images collected […]
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