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CLEAR LAKE SEDIMENT CORE
Scientists cored Clear Lake, finding ancient pollen records in sediment that reveal how California forests changed with past climate shiftsThe sediment cores from Clear Lake present a captivating window into California's forest history over the last half-million years. Research...- In 2008, Minnesota listed Fish Lake as impaired for nutrients after severe algae blooms. 16 years later, the lake improved enough to be delisted after treatments and restorationThe 2008 impairment designation was an important step because it formally recognized that the lake was not meeting the desired water-qualit...
- In 1996, New York flagged Upper Tonawanda Creek as a water-supply concern. 16 years later, NYSDEC removed it from the impaired list after farm BMPs improved water qualityNew York's Tonawanda Creek was once impaired by agricultural pollution. Farmers implemented best management practices to reduce soil erosio...
- In 2004, Iowa listed Kent Park Lake as impaired after nutrient and sediment runoff harmed clarity. 20 years later, monitoring showed it met algae and turbidity standardsKent Park Lake in Johnson County, Iowa, experienced water-quality problems linked to nutrient and sediment delivery, resulting in its place...
- In 1998, New York listed Keuka Lake as impaired after DDT contamination. 16 years later, fish-tissue data led officials to remove the lake from the impaired waters listKeuka Lake DDT cleanup shows how a pesticide banned decades ago kept affecting fish through contaminated soil and runoff. The problem began...
- In 2004, community partners began tackling Kent Park Lake's nutrient and sediment pollution. 20 years later, the lake met water quality standards and was removed from Iowa's impaired-waters list in 2024Kent Park Lake restoration took 20 years to deliver a result Iowa officials could finally recognize. The lake once struggled with nutrient ...
- Nepal floods Day 3: What we know and don't know about the tragedyNepal floods Day 3: A devastating flash flood swept through Nepal's Himalayan river valleys after a glacial collapse. Scientists are invest...
- What is a glacial collapse? The science behind the Nepal-Tibet floodsA glacial collapse occurs when a large mass of ice and rock suddenly breaks from a mountain slope, potentially triggering avalanches, debri...
- In 2016, researchers restored 452 meters of Maryland's Muddy Creek with woodchips, sand and gravel. 2 years later, monitoring found suspended sediment fell 73.8%, improving stream functionMuddy Creek is a tributary of the Rhode River and flows through the Smithsonian Environmental Research Center, an important site for ecolog...
- In 1994, Illinois EPA listed 50.75 miles of Silver Creek as impaired by farm pollution. 28 years later, Illinois removed the creek from its impaired list in 2022Upper Silver Creek in Illinois has been removed from an impaired waters list. Best management practices were installed to reduce pollution ...
- In 2002, Albany buried 1,500 feet of Patroon Creek underground. 18 years later, daylighting restored the stream and improved flood resilience across the project area tooAccording to the U.S. Environmental Protection Agency's success story, U.S. Geological Survey streamflow data showed that three of the five...
- In 2018, New York's Cortland County funded 3 culvert and stream projects. 5 years later, all 3 sites improved from severe barriers to insignificant barriers for better fish passageCortland County projects fit into a broader New York effort to identify and address barriers to aquatic organism passage. New York's Depart...
- In 2016, researchers proposed that salt fingers could send crystals to the Dead Sea floor. 3 years later, a 2019 study backed the theory, showing why the lakebed gains about 10 centimeters of salt yearlyRecent scientific research reveals the intriguing mechanism behind the formation of salt crystals in the Dead Sea. As warmer, salt-laden su...
- In 1992, Congress authorized the removal of 2 dams that had blocked salmon for a century. 24 years later, the Elwha River once again flowed freely from the Olympic Mountains to the seaElwha River Restoration changed one of America’s most remarkable river recovery stories. Two dams once blocked salmon from reaching upstrea...
- In 1961, two Wisconsin fishing buddies vanished without a trace but now the mystery of their haunting disappearance has been solvedIn 1961, two Wisconsin fishing buddies vanished without a trace but now the mystery of their haunting disappearance has been solved. Ronald...
- Arctic holds 1.3 trillion tonnes of ancient carbon, scientists find what warming does to itA study of Arctic seabed sediments has offered new clues about the fate of ancient carbon released from thawing permafrost. Researchers fou...
- In 1995, a Tasmanian fisherman found a dead carp. What followed was a four-decade operation to remove nearly 50,000 European fishA dead carp spotted in Tasmania's Lake Crescent in 1995 triggered a 28-year campaign to eradicate invasive European carp from Lake Crescent...
- 12,000 years ago, Yellowstone’s dry summers began leaving a charcoal trail in its lakes. 6,000 years later, researchers found the same climate pattern linked to lower lake levels and reduced hydrothermal activityYellowstone lake sediments preserved ancient climate and environmental records. Warmer, drier summers between 12,000 and 6,000 years ago br...
- In 4000 BCE, a lake Mega Chad larger than all five Great Lakes covered roughly 360,000 sq km of what is now the Sahara. 6,000 years later, only a tiny fraction, well under 1%, of that ancient lake remainsThousands of years ago, a vast lake covered an enormous area of what is now the southern Sahara. Known as Palaeolake Mega-Chad, the ancient...
- Since 2016, the Netherlands has used 37.2 million tonnes of lakebed sediment to build seven wildlife islands covering 1,300 hectaresIn the Markermeer region of the Netherlands, innovative artificial islands have been crafted using dredged materials from the lakebed. The ...
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