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FISH PASSAGE TECHNOLOGY
Washington used 1 pneumatic fish cannon to solve salmon passage past a 60m hydroelectric dam; the result transformed blocked rivers into thriving spawning grounds- In 1997, NPS installed 3 solar hot-water systems at Oklahoma’s Chickasaw park. 2 years later, the largest system supplied 18,194 kWh annually, replacing electric heating
- The U.S. Army Corps of Engineers spent $7 million on fish ladders in 1938 to move salmon past Bonneville Dam; decades later, the system carries 1 million a season in good years
- Maryland spent $12 million on a fish lift in 1991 to move American shad past Conowingo Dam; decades later, annual runs remained far below the 2 million-fish targetMaryland invested $12 million in a fish lift to help migrating shad overcome the Conowingo Dam. This technological solution proved ineffect...02 Sep, 2026, 03.10 PM IST
- In the 2nd century CE, Romans built a mysterious structure near the Colosseum decorated with sea creatures. Nearly 2,000 years later, its mosaic offered a surprising clue that it may have housed Rome's firefightersBeneath the ancient soil of Rome’s Caelian Hill, just steps from the iconic Colosseum, archaeologists stumbled upon a stunning two-thousand...10 Aug, 2026, 06.47 PM IST
- A surprising Arctic discovery shows melting icebergs are quietly building hidden neighborhoods on the ocean floorMelting icebergs are creating hidden arctic homes as disappearing glaciers reshape the deep ocean. Scientists found that iceberg-carried ro...26 Jun, 2026, 09.01 PM IST
- As Europe readies tougher migration measures, a Greek island sees illegal crossings spikeCrete is now a major entry point for migrants. The journey from Libya is long and dangerous. European Union border agency Frontex is increa...28 Feb, 2026, 10.42 AM IST
- Snoop on chatter & dark web, be mindful of privacy: IT dept tells its sleuths, revises search manual after 17 yearsThe Income Tax Department's revised manual, updated after 17 years, equips officers with new tools to combat tax evasion in the digital age...14 Jul, 2025, 12.33 AM IST
- The US is about to blow up a fake warship in the South China Sea but naval rivalry with Beijing is very real and growingThe live-fire drill is not a response to increased tensions with China over Taiwan, both the U.S. and the Philippines have stressed. But, e...20 Apr, 2023, 03.40 PM IST
- China’s reliance on Taiwan would make trade retaliation costlyIf China wants to mitigate the fallout of sanctions on its own economy, it could target Taiwanese wood, minerals, shoes or hats. Taiwan’s t...17 Aug, 2022, 07.04 AM IST
- US increasing scope complexity and frequency of military engagements with India: ShanahanCOMCASA will facilitate India to obtain critical defence technologies from the US, and access critical communication network to ensure inte...01 Jun, 2019, 12.07 PM IST
- This Delhi investor learnt trading in 'school of hard knocks', makes it bigAveek Mitra has been active in the investing world for over 21 years now.27 Feb, 2018, 02.51 PM IST
- India could be Donald Trump's next trade war targetModi was the fifth world leader Trump called after his inauguration, and trade issues didn’t come up, according to a readout of their conve...13 Feb, 2017, 02.36 PM IST
- GST, competitive logistics, e-mandis and food processing parks may integrate to sell daal at Rs 20/kg and mangoes at Rs 10/kgExperts said that after the bugs had been ironed out and the investment put in place, prices of food items such as lentils and fruits could...04 Feb, 2016, 06.11 PM IST
- Arunachal Pradesh CM Nabam Tuki assures passage of fish in damsAP CM Nabam Tuki today assured to incorporate in MoUs and MoAs provisions of passage for fish at dams of upcoming power projects in the sta...08 Jul, 2015, 03.06 PM IST
- Indo-China joint Silk Road Economic Belt & Maritime Silk Road: China seeks to address misgivingsThere are worries that China will utilise this to project power and military prowess much to discomfort of others.09 Apr, 2015, 12.46 PM IST
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