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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  • Brynn Anderson / AP

    A Sea of Flags: Commemorating More Than 675,000 Americans Lost to COVID-19

    Images of a temporary art installation made up of hundreds of thousands of small white flags representing Americans lost to COVID-19

  • Desiree Martin / AFP / Getty

    Photos: A Destructive Eruption on the Canary Islands

    More than 100 houses have been destroyed by a recent eruption on La Palma island.

  • Siphiwe Sibeko / Reuters

    Photos of the Week: Grenadier Guards, Floating Island, Wrapped Arch

    Flooding in southern France, cliff diving in Ireland, civilian astronauts’ launch from Florida, an elephant bath in Pakistan, scenes from the Met Gala in New York City, and much more

  • Hannibal Hanschke / Reuters

    Scenes From Greenland

    Snapshots from the largest island in the world