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GREAT LAKES FISH
Earlier this year, Michigan researchers analyzed lake sturgeon records spanning decades. 300 years later, their findings point to fish still living around the Great lakes for nearly 3 centuries- 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 remains
- Earlier this year, the U.S. Army Corps tested Chicago's invasive-carp barrier at 3 electrical levels. Now, engineers know how the system behaves when voltage rises to 4.6 volts per inch, helping prepare for a future Great Lakes invasion threat
- In 2012, researchers began collecting dragonfly larvae to reveal mercury pollution in protected waters. 13 years later, 21,000 samples helped create a model that can estimate freshwater mercury risk without testing every waterwayDragonfly larvae data from thirteen years helped scientists develop a new mercury risk model. This model estimates freshwater mercury risk ...15 Aug, 2026, 01.39 AM IST
- In 2011, USGS researchers began studying Lake Erie's fish and seasonal hypoxia across a multi-year project. 15 years later, the findings showed fish crowding areas near 2–3 mg/L oxygen, revealing an unexpected shift at the edges of low-oxygen zonesLake Erie’s seasonal hypoxia is changing where fish gather. For years, scientists watched oxygen levels fall and fish move around the lake....13 Aug, 2026, 07.02 PM IST
- In 2000, the American West entered a megadrought that became its driest stretch in roughly 1,200 years. Years later, it left major lakes and reservoirs majorly depleted, with some losing enough water to expose miles of lakebedSeveral major North American lakes are experiencing significant water level declines. Drought, warming temperatures, and increased water de...13 Aug, 2026, 12.11 AM IST
- In 1922, California introduced mosquitofish to eat mosquito larvae; within four years, they were in 30 counties and were later linked to native-species declinesIn 1922, California introduced mosquitofish in hopes of controlling mosquito populations. Although they were initially viewed as a solution...01 Aug, 2026, 05.54 PM IST
- In the 1970s, the US introduced four carp species to control weeds; decades later, these carp spread as far as Minnesota, threatening native fishFour Chinese carp species were imported to southern fish farms in the 1970s. These fish escaped into the Mississippi River system after flo...31 Jul, 2026, 04.40 PM IST
- In 1900, Chicago made its river flow backward to keep sewage out of Lake Michigan, redirecting the water toward the Mississippi Basin insteadChicago reversed its river flow in the late 1800s to protect its drinking water. This engineering feat sent waste away from Lake Michigan a...24 Jul, 2026, 05.51 PM IST
- As Lake Chad shrank to a tenth of its size, engineers revived Transaqua: A plan to pipe water 2,400 km from the Congo River to refill it, moving a whole river across a continentLake Chad's water levels have significantly decreased, impacting over thirty million people. Engineers propose Transaqua, a massive canal t...20 Jul, 2026, 05.54 PM IST
- Greece has placed a bounty on the head of the world's most toxic pufferfish, paying fishermen €5.33 per kilo to hunt the invasive predatorGreece is incentivizing fishermen with a generous bounty to hunt the dangerous silver-cheeked toadfish, an invasive species from the Indian...29 Jun, 2026, 03.48 PM IST
- A termite pesticide banned in 1988 is still turning up in wildlife; researchers found toxic brain levels in nearly half the sick skunks they examined near DetroitA banned pesticide, chlordane, used for termite control, is causing severe neurological damage and death in urban skunks, according to new ...26 Jun, 2026, 07.17 PM IST
- In 1988, cargo ships accidentally brought zebra mussels to the US in their ballast water, and they devastated the Great Lakes, but a 2026 study finds that after 20 years in Kansas lakes, they barely changed the fish or the waterA new study reveals that zebra mussel invasions in Kansas reservoirs over two decades have had minimal impact on water quality and fish pop...19 Jun, 2026, 02.40 PM IST
- A wildlife photographer’s 4-year quest ended with a coyote image that looks like a glitch and defies physicsCoyote jumping ice photo: A photographer captured a remarkable image of a coyote leaping over a crack in frozen Lake Superior after a four-...19 Jun, 2026, 12.38 AM IST
- From pet to pest: A 2026 experiment reveals that releasing goldfish into lakes triggers a full ecosystem regime shift, and no lake type is immuneReleasing pet goldfish into local waters causes extensive ecological damage. These fish grow large, stir up sediment, consume prey, and out...15 Jun, 2026, 04.06 PM IST
- In the 1960s, Sudbury's nickel smelters turned Ontario's lakes acidic, and tiny creatures evolved to survive, but when the pollution cleared, something unexpected happenedScientists witnessed evolution in action as a tiny copepod species, Leptodiaptomus minutus, adapted to acidic lakes in Killarney Provincial...06 Jun, 2026, 05.14 PM IST
- Swimming deep inside the Great Lakes with 150 teeth, a serrated tongue, and a ruthless hunger, this ‘vampire’ could destroy the entire ecosystemCanadian and US agencies are collaborating to combat the invasive sea lamprey in the Great Lakes, aiming to protect the $5.1-billion fisher...28 May, 2025, 06.28 AM IST
- Scientists discover 40 mysterious craters beneath Lake Michigan. Here's what we know so farScientists found large craters in Lake Michigan using sonar technology. The discovery was made during a mission to map the lakebed. Researc...02 Oct, 2024, 01.37 PM IST
- Water contamination threatens Dalpat Sagar Lake in ChhattisgarhThe 400-year-old picturesque Dalpat Sagar Wetlands, Jagdalpur, are facing an extreme threat of water pollution, which has already impacted ...21 May, 2014, 09.06 PM IST
- Winter migratory birds on a hopping flight through DelhiRare winter migratory birds like the Cotton Pygmy Goose, the Great White Pelican and the Greater Flamingo can be spotted at the capital’s O...23 Jul, 2012, 07.28 PM IST
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