Earth Day Apr 22, 2025

Earth Day

On Earth Day, let"s journey to one of nature"s most stunning displays of geothermal power—Grand Prismatic Spring in Yellowstone National Park, Wyoming. The largest hot spring in the US, it spans 370 feet across and reaches temperatures of 160°F. This geothermal marvel is fueled by the immense heat of the massive Yellowstone volcano beneath the surface. Its vivid rings of blue, green, yellow, and orange are created by heat-loving microorganisms—called thermophiles—that thrive in the mineral-rich waters.

© Ajith Kumar/Getty Images

palette

Today in History

Apr 22, 2018Have a ‘beary’ good Earth Day
Apr 22, 2019Meet our fuzzy Earth Day mascot
Apr 22, 202050 years of Earth Day
Apr 22, 2021Gazing down on planet Earth
Apr 22, 2023Earth Day and National Park Week
Apr 22, 2024Earth Day

More Desktop Wallpapers:

Nov 20, 2025World Childrens Day
Jan 17, 2025Brown pelican, San Diego, California
Mar 10, 2023Vale of Edale, Peak District, England
Aug 16, 2019Shining like Klondike gold
Jul 21, 2021An octagonal architectural treasure
Jul 13, 2018The puffin-rabbit connection
May 13, 2019In praise of bogs, swamps, and marshes
Sep 5, 2019A lush, green escape
Nov 19, 2024Tasmans Arch, Tasmania, Australia
Oct 28, 2025The Gothic Gate in the Adršpach-Teplice Rocks, Czechia
Jul 3, 2025Rainbow River, Rainbow Springs State Park, Florida
Aug 9, 2020A peek at an explosive peak
Sep 26, 2022Autumn in Alaska
Mar 7, 2019March of the flowers
Jun 23, 2018Commemorating peace in Antarctica
Feb 26, 2019Snow on the temple
Feb 8, 2021A hero for the 21st century
Jan 7, 2024Old Rock Day
Apr 12, 2020Who created the Easter Bunny?
Oct 17, 2019Red-leaf hunting in Japan
Nov 18, 2024Porthcawl Lighthouse, Wales, UK
Jul 25, 2020Going with the floe
Dec 9, 2022Muskoxen in Dovre-Sunndalsfjella National Park, Norway
May 23, 2019Come out of your shell for World Turtle Day
May 12, 2018It’s World Migratory Bird Day
Mar 21, 2020It s World Poetry Day
Aug 4, 2019Pups of the prairie
Dec 5, 2023Neuschwanstein and Hohenschwangau castles, Bavaria, Germany
Mar 14, 2018Happy Pi Day!
Jun 23, 2025The Elbe in Dresden, Germany