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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  • JPL-Caltech / SwRI / MSSS / Betsy Asher Hall / Gervasio Robles / NASA

    Photos of the Week: 5/20–5/26

    An elephant rescue in India, President Trump travels overseas, a terror attack in Manchester, England, the removal of a Confederate statue in New Orleans, and much more.

  • Andrea Spinelli / Corbis via Getty

    A World Without People

    For a number of reasons, natural and human, people have abandoned many places around the world.

  • Dan Mullan / Getty

    Baku 2017: The Islamic Solidarity Games

    For the past 10 days in Baku, Azerbaijan, 6,000 athletes from 54 nations competed in 21 sports during the fourth iteration of the Islamic Solidarity Games.

  • Lucas Jackson / Reuters

    The Finale of 'The Greatest Show on Earth'

    After a run of 146 years, the Ringling Bros. and Barnum & Bailey Circus, known as “The Greatest Show on Earth,” has come to an end.

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