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BIOLOGICAL INVASION
In 1974, a Spainish rancher imported 2,000 kg of American crayfish from Louisiana. 50 years later, it has become an invasion nobody could stop- In 2005, scientists revealed how ships helped Moon Jellyfish conquer the world's seas and threaten ecosystems around the planet
- In 2006, Arizona tried to eliminate a cotton pest by breeding billions more; planes flooded fields with sterile pink bollworm moths; by 2018, the US declared victory
- 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 2000, California found an aquarium alga choking native seagrass: officials covered every patch with black PVC and chlorinated everything beneath; six years later, it was goneAn invasive seaweed, Caulerpa taxifolia, was discovered in California's Agua Hedionda Lagoon in 2000. Teams of divers used tarps and chlori...01 Aug, 2026, 05.51 PM IST
- In the 1960s, rose-ringed parakeets were first spotted in southeast England; today, they thrive in London's parks and gardensIn London, rose-ringed parakeets can frequently be spotted flitting through parks and gardens. Studies clarify the narrative of their arriv...31 Jul, 2026, 06.04 PM IST
- Rare yellow flower unseen on California public land for 68 years resurfaces after cattle clear invasive weedsA rare yellow flower, unseen for 68 years, has reappeared on public land. Botanists discovered the caper-fruited Tropidocarpum in Californi...31 Jul, 2026, 05.37 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
- Jurassic Sharks on Shark Week 2026: When and where to watch the prehistoric special in the US and UK without a cable subscriptionJurassic Sharks Sharks Week: Shark Week 2026 is taking viewers back to the age of prehistoric predators with "Jurassic Sharks." 'Shark Week...29 Jul, 2026, 04.47 PM IST
- In 1890, one man released 60 birds in New York Central park. 135 years later, there are 200 million of them across AmericaHow 60 birds became 200 million starlings: European starlings, numbering 200 million, trace their lineage to a 1890 Manhattan release. Euge...28 Jul, 2026, 09.03 PM IST
- In 2001, a USDA scientist released beetles to destroy an invasive tree, but they eliminated 94% of an endangered bird's habitat along one riverAn invasive beetle introduced to control tamarisk trees has devastated flycatcher nesting grounds. This beetle, released by the USDA, succe...28 Jul, 2026, 04.43 PM IST
- In 1778, Captain James Cook’s crew released goats in Hawaii as a future food source; their descendants damaged native plants and worsened erosionCaptain Cook introduced goats to Hawaii in 1778, which then proliferated rapidly. These animals severely damaged native plants and altered ...28 Jul, 2026, 04.19 PM IST
- NASA astronaut Chris Williams returns to Earth after 241 days and 102 million miles in spaceNASA astronaut Chris Williams returns to Earth after a 241-day International Space Station mission, landing safely in Kazakhstan with two R...27 Jul, 2026, 06.35 PM IST
- In 1935, an Australian entomologist shipped 102 cane toads from Hawaii to fight crop beetles; 2,400 were released before anyone tested the planAustralian scientists introduced toxic cane toads to control sugar cane pests in 1935. These toads failed to eat the target beetles and spr...27 Jul, 2026, 05.56 PM IST
- In 1850s, a Brooklyn scientist imported 16 English sparrows to eat urban caterpillars; by 1915, the invasive birds had spread across AmericaHouse sparrows were introduced to America in 1850, which quickly led to their widespread establishment. These birds, initially intended to ...27 Jul, 2026, 05.22 PM IST
- How Australia’s Brown Tree snakes reached Guam after World War II and left biologists baffled by the invasionBrown tree snakes, an invasive species on Guam, have baffled biologists for years. Their population is believed to have started with only a...27 Jul, 2026, 12.38 PM IST
- From a 1937 garden planting to an ecological crisis: One Miconia tree now spreads 8.9 million seeds, endangering Queensland's iconic rainforestsToday, a single mature Miconia tree can produce over 8.9 million seeds in one season. What began as a 1937 garden introduction in tahiti ha...26 Jul, 2026, 12.00 AM IST
- Britain dropped more than 300 tons of poison across South Georgia to kill every rat; by 2018, over 100,000 hectares were rodent-freeSouth Georgia island successfully removed its rat population after a massive eradication effort. Helicopters dropped poisoned bait across t...25 Jul, 2026, 08.26 PM IST
- 1,500 ships trapped in Gulf of Hormuz are quietly multiplying an underwater army that could unleash World's biggest bioinvasion eventGulf of Hormuz underwater army: Nearly fifteen hundred ships stuck in the Persian Gulf after fighting closed the Strait of Hormuz. These id...24 Jul, 2026, 09.54 AM IST
- Brazilian scientist who defied a dictatorship bought 63 African queen bees in 1956; a year later, 26 escaped and became one of America's most notorious invasive insectsTwenty-six African queen honey bees escaped a Brazilian apiary in 1957, beginning a continental spread. These bees, known as Africanized ho...23 Jul, 2026, 01.06 PM IST
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