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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  • Stephanie Keith / Reuters

    Photos of the Week: 1/14–1/20

    Preparations for the Inauguration in Washington, DC, a sea lion kisses Princess Stephanie of Monaco, a volcanic eruption in Mexico, and much more.

  • AFP / Getty

    Iranian High-rise Collapses in Huge Fire, Killing Dozens

    A fire engulfed a landmark building in Tehran, Iran, this morning, leading to a complete collapse that may have killed as many as 30 people, including many firefighters.

  • Raul Arboleda / AFP / Getty

    FARC Guerrillas Demobilizing in Colombia

    AFP photographer Raul Arboleda recently spent time at a FARC camp, observing daily life as the rebels demobilize and prepare to move into the next phase of their lives.

  • Mark Makela / Reuters

    The Selling of the Presidents 2017

    The Hall of Presidents and First Ladies in Gettysburg, Pennsylvania, recently closed down, auctioning off its collection of life-size wax figures of U.S. presidents.

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