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SALMON MIGRATION
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 sea- In 2021, scientists tested 20 bonnethead sharks at Florida State and found they use Earth’s magnetic field to navigate: Study suggests sharks may have a magnetic map
- In 2012, PacifiCorp launched a trap-and-haul program to move adult salmon upstream past Merwin Dam. 14 years later, researchers found 2 stages in the system but 1 decisive bottleneck: young salmon failing to find the artificial current downstream
- In 2011, California turned dormant rice fields into winter salmon nurseries; the young fish grew up to eight times faster than in riversFlooded rice fields in California's Yolo Bypass are helping young salmon grow significantly faster. These fields provide a rich food source...13 Aug, 2026, 02.50 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
- Still storing leftovers in aluminum foil? Doctors warn this everyday kitchen habit could increase metal exposure; here's a list of foods to avoidDo you still store leftovers in aluminum foil? Doctors and medical experts have warned that this everyday kitchen habit, a practice common ...30 Jul, 2026, 04.53 PM IST
- A Seattle veteran was told he had four months to live; he began cleaning polluted Hamm Creek, and salmon, beavers and river otters later returnedA Vietnam veteran found a new purpose cleaning a polluted creek near his home. This personal mission extended his life by twenty-seven year...29 Jul, 2026, 04.43 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 2012 and 2013, Maine removed two hydroelectric dams from the Penobscot River; river herring later rose from almost zero to more than six millionMaine's Penobscot River shows a remarkable environmental recovery after dam removals. Millions of river herring have returned to the waterw...24 Jul, 2026, 06.33 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
- In 2011, the US began tearing down two century-old dams on Washington's Elwha River, the largest dam removal in US history at the time, freeing over 20 million cubic yards of trapped sedimentThe Elwha River dams were dismantled after nearly a century of operation. This significant engineering project restored over ninety miles o...23 Jul, 2026, 05.26 PM IST
- Fish are adapting to rivers shaped by dams and barriers, and that may be changing how man-made rivers function over timeFor decades, river restoration has focused on returning waterways to conditions that existed before dams, weirs and large-scale human inter...15 Jun, 2026, 06.03 PM IST
- Scientists have discovered that cocaine-powered super salmon live longer and swim faster than normal salmonScientists found Atlantic salmon exposed to cocaine swam further and lived longer. This study highlights how drugs in waterways change aqua...25 Apr, 2026, 01.33 PM IST
- Why Hundreds of Bald Eagles Flock to Frozen Mountains in WinterHundreds of Bald Eagles gather in Alaska, British Columbia, and the northwestern United States during winter. This behaviour is driven by f...11 Feb, 2026, 05.19 PM IST
- Salmon on sedatives: How human meds are making wild fish swim faster — But at what cost?A new study reveals a strange impact on Atlantic salmon. Human drugs in rivers are making them swim faster. Scientists found sleeping pills...14 Apr, 2025, 12.17 AM IST
- The annual migration of 'Homo NRIensis'During winter in India, along with migratory birds like Siberian Cranes and Bluethroats, a human species called Homo NRIensis returns. Thes...29 Dec, 2023, 11.58 PM IST
- Warming rivers in US West killing fish, imperiling industryHundreds of thousands of young salmon are dying in Northern California's Klamath River as low water levels brought about by drought allow a...26 Jul, 2021, 07.52 PM IST
- What it takes to do a Salmon Run & go against the crowd in the marketLike Salmon, one species of investors who show similar skill and grit in the market are called ‘contrarian investors’. They go against the ...27 Jan, 2021, 11.05 AM IST
- Jellyfish invasion in a warming worldAblood-orange blob the size of a small refrigerator emerged from the dark waters, its venomous tentacles trapped in a fishing net. Within m...21 Nov, 2009, 05.18 AM IST
- Hilsa a great seasonal draw, if fished judiciouslyThere is nothing so close to the heart of the Bengali as ilish maach, especially when the monsoon clouds hang low.28 Aug, 2008, 02.32 AM IST
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