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FISH POPULATIONS
California's Tule River tribe had not had beavers on its southern Sierra Nevada lands for decades; now a family of seven is back in the South Fork Tule River watershed- North America once had 400 million beavers, nearly wiped out by the 1900s; they are now helping shield wildfire-prone stream corridors in northeastern Washington from flames
- Why are so many dolphins washing up on South Australian beaches? Long-term data point to a devastating algal bloom
- Florida Python Challenge 2026 winners to be announced this week: Why hundreds compete to hunt invasive snakes for a $10,000 prizeThe Florida Python Challenge invites enthusiasts to actively combat the invasive Burmese python population. Each year, exciting cash prizes...04 Aug, 2026, 02.33 PM IST
- In 1969, California biologist Phil Pister carried endangered Owens pupfish across hazardous terrain in two buckets; in 2024, a seventh refuge population was establishedIn a dramatic rescue in 1969, biologist Phil Pister painstakingly transported the last of the Owens pupfish through challenging landscapes ...03 Aug, 2026, 07.01 PM IST
- In 1970, US dumped 2 million tires into the ocean; a plan to save marine life turned into one of the biggest environmental blundersIn 1972, more than 2 million old tires were dumped into the Atlantic Ocean off Florida. The goal was simple. Create an artificial reef and ...03 Aug, 2026, 06.32 PM IST
- For more than 400 years, the Gulf of Maine has anchored New England's fishing heritage; today, warming waters are bringing black sea bass into one of the planet's fastest-warming marine ecosystemsOcean warming allows black sea bass to expand their range northward. These fish mature faster in colder northern waters, impacting assessme...03 Aug, 2026, 05.01 PM IST
- In 1970s, Burmese pythons arrived in Florida as pets. Then a hurricane helped turn them into the Everglades' top predator—now robot rabbits are fighting backFlorida is deploying solar-powered robot rabbits to lure invasive Burmese pythons. These AI-powered decoys imitate prey, using heat and sce...03 Aug, 2026, 03.44 PM IST
- In 1862, a single gold discovery turned this remote valley into Montana's first capital; today, more than 50 buildings still stand frozen in timeMontana's first territorial capital, Bannack, was established in 1862 after gold discovery. This frontier town quickly grew and then declin...02 Aug, 2026, 11.27 PM 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 2006, Canada launched a mission to save Atlantic salmon. Nearly 20 years later, the fish are returningAtlantic salmon populations declined due to habitat destruction and overfishing. Conservation efforts involving captive breeding and habita...30 Jul, 2026, 06.25 PM IST
- Moken sea nomads living on the Andaman Sea can see underwater like dolphins: Scientists discover how this Indigenous tribe trained their eyes to develop superhuman visionScientists have confirmed that Moken sea nomad children living on the Andaman Sea can see underwater with twice the clarity of other childr...30 Jul, 2026, 03.03 PM IST
- 30 million oysters are being dumped into US's Chesapeake Bay in a race to save America's largest estuaryMillions of baby oysters are being planted in the Chesapeake Bay. Scientists hope this effort will revive one of America's most important w...29 Jul, 2026, 06.09 PM IST
- In the 1960s, giant Red King crabs were introduced to the Barents Sea by the Soviets, then everything changedGiant red king crabs: Soviet scientists introduced red king crabs to the Barents Sea for a new seafood resource. These crabs successfully e...29 Jul, 2026, 01.50 AM IST
- Texas released 3 million captive-bred eggs to save this endangered amphibian. It may be workingA male Houston toad was sighted in Bastrop County, Texas, after a 50-year absence. This sighting follows the release of millions of captive...28 Jul, 2026, 08.59 PM IST
- Australia built an A$187,000 electric fence across wild horse country; inside lies an endangered alpine wetland supporting three threatened animalsAn electric fence protects a rare alpine wetland in Australia's Kosciuszko National Park. This small area is home to three threatened nativ...28 Jul, 2026, 06.08 PM IST
- In 1948, America built Mud Mountain Dam for flood control; decades later, a $112 million facility was designed to carry 1.2 million fish around it annuallyThe Mud Mountain Dam serves as a crucial flood prevention structure, shielding communities downstream from severe weather. Yet, its constru...25 Jul, 2026, 08.37 PM IST
- In 1942, America completed Friant Dam and diverted most of the San Joaquin River into farms; a salmon run once numbering nearly 50,000 adults collapsedFriant Dam construction in California significantly altered the San Joaquin River's flow. This action disconnected salmon from their spawni...24 Jul, 2026, 06.15 PM IST
- Not a crocodile or alligator: Massive 10-feet-long lizards, world's second largest, roam in India's SundarbansIAS officer Sanjay Kumar highlighted the Asian water monitor and Bengal monitor thriving in the Sundarbans. The Asian water monitor, the wo...23 Jul, 2026, 02.53 PM IST
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