You may have heard penguins being referred to as the “birds of the sea,” but unlike most birds, they can’t actually fly. Instead, they’re truly remarkable swimmers, gliding effortlessly ...

Scientists found that when birds lose the ability to fly, their skeletons change first, while feathers take much longer to ...

Planetmountain.com is a site about climbing, mountaineering, trekking, via ferrata, freeriding, ski mountaineering, snowboarding, snowshoeing, and ice climbing on all the mountains of the world. It ...

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