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Today's featured article
A dam is a structure that impounds water or restricts its flow. The four types are gravity dams (example pictured), embankment dams, buttress dams, and arch dams. Dams provide irrigation, hydropower, water supply, flood management, recreation, inland navigation, and fish farming. An early dam was the Jawa Dam in modern Jordan, built around 3000 BCE. From the late 18th century, the process of designing dams changed from an informal practice to an engineering discipline. In the 20th century, the widespread availability of concrete led to the creation of many large dams worldwide. Dams may include locks, fish ladders, spillways, and power stations. Dams occasionally fail, resulting in flooding and loss of life. Organized opposition to dam projects emerged in the modern era, focused on environmental and social impacts such as the loss of plant and animal habitats, reduced water and sediment flow, degraded landscape aesthetics, the submergence of cultural sites, and forced relocations of people. (Full article...)
Today's featured picture
{{POTD row}}Current events
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- Flooding in Bangkok (pictured) and the surrounding area leaves at least 23 people dead.
- The Chess Olympiad concludes with Uzbekistan winning the Open event and China winning the Women's event.
- In Australian rules football, the Brisbane Lions win their third premiership in a row, defeating Fremantle in the AFL Grand Final.
- An attack on a police complex in Kohat, Pakistan, leaves 31 people dead.
Selected anniversaries
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Did you know...
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- ... that Shayok Misha Chowdhury (pictured) staged his own mother's death in a play they wrote and performed together at The Bushwick Starr?
- ... that sandbags help salmon traverse Springbrook Creek?
- ... that Romanian literary historian Alexandru George once gifted a cooking pot and a saucepan to a poet whom he was courting?
- ... that the publication of a register of Egyptian dyke workers in 1788 marked the beginning of papyrology?
- ... that Rolf Lyssy's 1978 film The Swissmakers was still the most popular Swiss film of all time in 2025?
- ... that a graduation fashion show for a local arts school was held in a rapid transit station that had yet to open?
- ... that future Macau international footballer Alberto Carvalhal was involved in repatriating the remains of Pedro I to Brazil?
- ... that an asteroid collision in the Nysa–Polana complex might have caused an impact shower on the Moon 800 million years ago?
- ... that, despite Samuel Quincy's alignment with the British, he was fondly remembered in exile by U.S. president John Adams?
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