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How a super El Niño affects the global climate

How a super El Niño affects the global climate

From sharky shores and starving seabirds to droughts, wildfires, and floods.
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El Niño Brings Surge of Sharks and Marine Life to California Coast

El Niño Brings Surge of Sharks and Marine Life to California Coast

An intensifying El Niño is expected to bring significant changes to marine ecosystems along the California coast this summer, according to USA Today (published July 30, 2026). Warmer waters caused by the phenomenon are drawing an unusual influx of marine species, including white sharks, stingrays, tropical fish, and even venomous yellow-bellied sea snakes. Experts predict this El Niño could be one of the strongest on record, with its effects already being felt due to a concurrent marine heatwave. Juvenile white sharks, in particular, are arriving in large numbers, drawn by the warmer water temperatures. The phenomenon is also altering food chains, suppressing nutrient upwelling, and shifting the distribution of marine life. Researchers are closely monitoring these changes, which are expected to continue through the summer and into the fall.
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Weakening Atlantic Ocean Current May Intensify Atmospheric Rivers in California

Weakening Atlantic Ocean Current May Intensify Atmospheric Rivers in California

A new study highlights the potential impact of a weakening Atlantic Meridional Overturning Circulation (AMOC) on weather patterns, particularly in California. The AMOC, a critical system of ocean currents that redistributes heat globally, is reportedly slowing down and is projected to weaken further by the end of the 21st century. This shift could lead to warmer waters near the equator, influencing hurricane development and altering wind and rainfall patterns. Researchers suggest that a weakened AMOC strengthens prevailing winds in the North Pacific, which in turn drives more intense atmospheric rivers toward the West Coast of North America. Atmospheric rivers, which transport large amounts of water vapor, are known to bring significant rainfall to California, potentially alleviating drought conditions but also increasing the risk of hazardous weather events such as flooding and extreme snowfall.
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El Niño Expected to Increase Shark and Snake Sightings on U.S. West Coast

El Niño Expected to Increase Shark and Snake Sightings on U.S. West Coast

The intensifying El Niño phenomenon is predicted to bring an influx of unusual marine life, including sharks and sea snakes, to the California coast. Warmer waters are expected to attract species like tiger sharks, bull sharks, and hammerhead sharks, which are typically not found in these regions. The Shark Lab at Long Beach State University is preparing the public for increased interactions with these marine animals. The phenomenon alters marine ecosystems by shifting the distribution of species and their prey, leading to a 'sharky summer' with potential impacts on local marine activities.
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Mediterranean Sea Warming Threatens Biodiversity with Invasive Species

Mediterranean Sea Warming Threatens Biodiversity with Invasive Species

The Mediterranean Sea is experiencing significant warming due to climate change, primarily driven by the burning of fossil fuels. This warming has led to the introduction and spread of hundreds of invasive fish species, which are decimating native populations. Scientists have identified the Mediterranean as a climate change 'hot spot,' with temperatures expected to rise by 2 to 6 degrees Celsius by 2100. The enclosed nature of the sea prevents heat dissipation, exacerbating the warming effect. Invasive species such as the spotted puffer fish and lionfish are moving towards France and Spain, having entered through the Suez Canal. These species pose a threat to local biodiversity and the livelihoods of coastal communities that rely on traditional fishing practices.
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Record-breaking El Niño Threatens California's Fishing Industry

Record-breaking El Niño Threatens California's Fishing Industry

Federal scientists have reported an 81% likelihood of a 'super' El Niño event in 2026, which could have severe consequences for California's commercial fishing industry (Los Angeles Times, 2026-07-29). Researchers are drawing comparisons to the 2015-2016 El Niño, which, combined with a Pacific heat wave, caused significant disruptions to West Coast fisheries. Warmer ocean temperatures are expected to impact marine ecosystems, with species moving to new habitats, declining in numbers, or becoming more susceptible to diseases. Key fisheries, such as Dungeness crab and salmon, are particularly at risk, with potential delays or closures of fishing seasons. The economic impact could be devastating, as seen in 2015-2016 when 71% of California's Dungeness crab boats ceased operations, resulting in over 200 job losses.
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Hurricane Genevieve's Swells Pose Dangers to California's Coastline

Hurricane Genevieve's Swells Pose Dangers to California's Coastline

Hurricane Genevieve, a major hurricane in the eastern Pacific, is generating large swells that are expected to impact the California coastline. The storm, which briefly reached Category 5 strength, is currently a high-end Category 3 hurricane. Although it poses no direct threat to land, the National Hurricane Center has warned of potentially life-threatening surf and rip current conditions along the West Coast. The hurricane's powerful wind field is creating long-period swells that are affecting parts of Mexico and the Baja California Peninsula. These conditions are expected to continue throughout the week, with the largest waves forecasted around Thursday and into the weekend. The National Weather Service has issued advisories for portions of the Southern California coast, citing risks of dangerous swimming conditions and coastal flooding.
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AI-Induced Hiring Slowdown Affects West Coast Tech Job Market

AI-Induced Hiring Slowdown Affects West Coast Tech Job Market

AI-Induced Hiring Slowdown Affects West Coast Tech Job Market
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Stronger atmospheric rivers in California? One study says it's possible

Stronger atmospheric rivers in California? One study says it's possible

A slowing Atlantic current could strengthen California’s atmospheric rivers, increasing winter precipitation, flood risks and water challenges, a study finds.
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California's Solar Panel Canal Project Aims to Address Water and Land Scarcity

California's Solar Panel Canal Project Aims to Address Water and Land Scarcity

California has launched Project Nexus, an innovative initiative to cover irrigation canals with solar panels in Stanislaus County. This pilot project aims to generate 1.6 MW of clean electricity while addressing land scarcity and water loss. By installing solar arrays over existing water canals, the project not only conserves land but also reduces water evaporation by up to 70% and decreases aquatic weed growth by 85%. The flowing water beneath the panels helps cool them, enhancing their efficiency. This dual-purpose infrastructure is seen as a potential model for maximizing clean energy generation while preserving natural resources.
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Prescribed Burns Save 1,900 Giant Sequoias in California

Prescribed Burns Save 1,900 Giant Sequoias in California

A recent study published in Nature Communications highlights the effectiveness of prescribed burns in protecting California's iconic giant sequoia trees from wildfires. Researchers analyzed 26,400 sequoias across 19 groves and found that trees treated with prescribed burns in the past decade were four times more likely to survive wildfires. These controlled, low-intensity fires reduce combustible materials and open up the forest canopy, creating a safer environment for the trees. The study estimates that prescribed burns prevented 1,900 sequoia deaths during the devastating 2020 and 2021 wildfires in Sequoia and Kings Canyon National Parks. Without these measures, an additional 3,900 trees might have been lost. The findings underscore the importance of proactive forest management as wildfires become increasingly destructive due to climate change.
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Climate Change Contributes to Sleep Loss Across U.S. Cities

Climate Change Contributes to Sleep Loss Across U.S. Cities

A recent analysis by Climate Central reveals that climate change is causing significant sleep loss due to rising nighttime temperatures. Between 2020 and 2025, people in 253 U.S. cities lost an average of 36 hours of sleep annually, with about 13% of this loss attributed to human-caused climate change. The most affected states include Arizona, California, Florida, and Nevada. The study highlights the growing impact of climate change on sleep quality, as warmer nights disrupt the body's cooling process, leading to shorter sleep duration and reduced quality.