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There is no award for completing the hike from Mexico to Canada through the western United States. But it is clear from the ground and space that the journey through 48 wilderness areas and demanding terrain will change you.
Published Aug 1, 2019
In honor of our 20th anniversary, we offer a selection of some of the most beautiful, newsworthy, interesting, and scientifically important images from the past 20 years — one for each day of the calendar year.
Published Jun 19, 2019
Swirling white clouds, deep blue oceans, and multicolored landscapes come to life on the pages of NASA’s new photo essay Earth, a collection of dramatic images captured by satellites.
Published Jun 4, 2019
Our world is constantly changing. We have evolved with it.
Published May 7, 2019
Pine Island Glacier is one of the fastest-retreating glaciers in Antarctica. This timeline highlights the most notable calving events of the past two decades.
Published Apr 9, 2019