Alex Honnold is arguably the most extreme mountaineer in the world as he frequently scales high rock formations with only climbing shoes and a chalk bag. With no other safety precautions in place, he could easily plunge to his death with even the slightest mistake. Here are some photos of him doing what few other people would ever dare to try.
Since 1972, Landsat satellites have collected images of the Earth’s land surface. These amazing pictures now reveal a visual story of how the land has changed over time as a result of natural and human interference. Each image spans a ground track of 115 miles (185 km’s) wide and the same area is recorded every 16 to 18 days.