Masterpiece of acoustic science

Masterpiece of acoustic science

Ancient theater of Epidaurus in Argolis province, Greece (© George Pachantouris/Getty Images)

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Today in History

Feb. 10, 2024Happy Lunar New Year!
Feb. 10, 2025Banff National Park, Alberta
Feb. 10, 2026Es Vedrà and Es Vedranell, Ibiza, Spain

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Big rocks, big heads, still counting?
Nov. 4, 2024Grasmere, Lake District, Cumbria, England
Nov. 13, 2023Serra de Tramuntana, Balearic Islands, Majorca, Spain
Meet an expert on the dog days of summer
Sep. 21, 2023International Day of Peace
Jul. 24, 2025Happy Cousins Day!
Sep. 29, 2025Rainbow houses, Houten, Netherlands
Shell-ebrating sea turtles
Grizzly bear and cub
Singing the blues
Were halfway there
Mar. 23, 2024World Meteorological Day
Is a hug really that magical?
Stripes in sight
May 2, 2024Craters of the Moon National Monument and Preserve, Idaho, USA
Jul. 16, 2025Temple of Philae, Aswan, Egypt
May 19, 2024Vernazza, Cinque Terre, Liguria, Italy
Dec. 14, 2025Christmas Bird Count
Feb. 29, 2024Leap Day
Oct. 23, 2025International Day of the Snow Leopard
Dec. 30, 2024Mount Field National Park, Tasmania, Australia
Dec. 26, 2025Boxing Day
May 17, 2024Endangered Species Day
Where are these illuminated walkways?
May 29, 2024World Otter Day
Wind-powered ice racing
May 17, 2025A delta in the Venetian Lagoon, Italy
Nov. 16, 2025A traboule in Lyon, France
Sep. 24, 2023World Rivers Day
Jul. 24, 2024Cousins Day