National Park Week begins Apr 18, 2020

To kick off National Park Week, which starts today, we"re turning our lens on Vernal Fall in California"s Yosemite National Park. This time of year, the waterfall flows in a torrent, but by late summer it can be reduced to a trickle of small streams slipping over the edge. Most years, Vernal Fall is at full power by May, as the spring thaw in the mountains melts the snowpack, turning the falls into a raging tumble of water spilling to the valley floor where the Merced River flows.

© elvistudio/Shutterstock

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Today in History

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Apr 18, 2023International Day for Monuments and Sites
Apr 18, 2024International Day for Monuments and Sites
Apr 18, 2025International Day for Monuments and Sites
Apr 18, 2026World Heritage Day

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May 20, 2026World Bee Day
Dec 9, 2020It s Computer Science Education Week
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May 24, 2024European Day of Parks
May 19, 2018At ease, it’s Armed Forces Day
Sep 9, 2023Ayutthaya Historical Park, Thailand
Jul 13, 2018The puffin-rabbit connection
Apr 24, 2024White trilliums blooming in Ontario, Canada
Feb 25, 2023Bryce Canyon National Park turns 100
Jul 28, 2018Defying gravity on a swing ride
Mar 18, 2022Holi festival
Jun 13, 2021Bear watching in the Finnish forest
Jan 7, 2020Jupiter and the Galilean moons
Mar 29, 2021Rising up from the black sand like rock gods
Oct 18, 2021A Welsh wonder turns 70
Oct 30, 2019Cross this bridge if you dare
Jan 1, 2019New Year’s Day in the land of the rising sun
Sep 1, 2018Let the Highland games begin
Dec 28, 2024Endangered Species Act
Aug 10, 2021Smithsonian Secretary Lonnie Bunch on the institution s 175th anniversary
May 30, 2023Playa del Amor, Marietas Islands, Mexico
Feb 12, 2025Celebrating Charles Darwin
Jun 25, 2023Al-Khazneh in Petra, Jordan
Oct 20, 2025International Sloth Day
Nov 17, 2019Remembering the Velvet Revolution
May 8, 2024Marseille welcomes the Olympic torch