Earth Day 45

First organized in 1970, Earth Day is a day set aside to remember and appreciate the Earth's environment, and our responsibilities and roles within it. On April 22 we observe the 45th annual Earth Day, and though many things have changed for the better, environmental challenges remain. In the past 45 years, the population of the Earth has doubled—75 percent of the people alive today were born after 1970—and the increased demand on our limited resources makes sustainable solutions even more important. Collected here are 45 images of our world from recent years, each a glimpse into some aspect of our environment, how it affects and sustains us, and how we affect it.

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  • Noah Berger / AP

    Flying Around the World in a Solar Powered Plane

    Pilots Bertrand Piccard and Andre Borschberg successfully landed the Solar Impulse 2 aircraft in Abu Dhabi on Tuesday, after flying around the world using only the power of the Sun.

  • David McNew / Getty

    The Terrible Beauty of Californian Wildfires, as Seen by David McNew

    Getty photographer David McNew has been covering Californian wildfires for more than a decade, and has an eye for finding the visual beauty amid the horrible destruction.

  • Aris Messinis / AFP / Getty

    Photos of the Week 7/16 - 7/22

    Unrest in Turkey, a Santa Claus competition in Denmark, virtual reality in Israel, kite running in Rio, and much more.

  • Bernadett Szabo / Reuters

    Bathing in Budapest

    Hot springs at this Hungarian location have been in use since the 12th century

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