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The AMOC Slowdown: A Warning Sign From the Atlantic
What Is the AMOC? Picture a giant conveyor belt — like the ones at a grocery store checkout — but instead of groceries, it’s moving billions of gallons of ocean water all around the planet. That’s basically what the Atlantic Meridional Overturning Circulation, or AMOC (say it like “AY-mock”), does. Here’s how it works: Warm, salty water near the tropics flows north along the surface of the Atlantic Ocean, carrying heat with it toward Europe. When this warm water reaches the cold waters near Greenland, it cools down and gets heavier. Heavy water sinks to the ocean floor, then flows back south as a deep, cold current. Eventually, that cold…
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Virtual Power Plants: The Power Plant You Can’t See
Imagine if thousands of homes, businesses, and electric cars could work together like one giant power plant—without building a single smokestack or power station. That may sound like science fiction, but it’s already happening. It’s called a Virtual Power Plant, or VPP. What Is a Virtual Power Plant? A virtual power plant isn’t a real building. Instead, it’s a network of connected energy devices that work together through computers and the internet. These devices can include: On their own, each device doesn’t make much of a difference. But when thousands of them work together, they can act like a large power plant. How Does It Work? Think of a virtual…
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How California’s Ocean Heat Wave Is Wiping Out Seabirds
My good friend, George is a surfer. Recently, he walked up the beach carrying his surfboard and counted seven dead birds in a distance of just 100 feet or so. So, what’s going on? A major ocean heat wave is hitting the California coast and harming wildlife — especially seabirds like pelicans, cormorants, murres, and gulls. In some places, ocean temperatures have jumped as much as 7 degrees above normal, breaking records along the coast. Scientists at the Scripps Institution of Oceanography recorded 38 days since January 1st where the water temperature off their La Jolla pier broke records dating back to 1916. Why Are Birds Starving? Warm water disrupts…
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Is Global Warming Just an Urban Heat Island Effect? Scientists Say No
Have you ever noticed it’s hotter in a city than in the countryside? That’s not your imagination — it’s a real thing called the urban heat island effect. But some people claim this means global warming isn’t real, that we’re just measuring hot pavement instead of an actual warming planet. It may sound convincing at first, but the evidence doesn’t support it. First, What is the Urban Heat Island Effect? Cities are full of concrete, asphalt, and buildings that soak up heat during the day and release it slowly at night. There aren’t many trees to provide shade or moisture. So, cities end up several degrees warmer than the forests…
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On the Brink: Endangered Species Puzzle Hunt
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Renewable Energy is Powering a Brighter Future
I know it’s hard to ignore the bad news right now. We’re seeing stronger heat waves, bigger wildfires, and oceans under stress. And on top of that, some political decisions feel like they’re pushing us backward instead of forward. But here’s something amazing: in 2025, something shifted—and you’re here to see it. The part that doesn’t always make the headlines? Renewable energy is moving ahead anyway—and it’s picking up speed. For the first time in history, the world added so much renewable energy that fossil fuels actually lost ground. Not just slowed down. Lost ground. Solar panels and wind turbines grew so fast that they supplied 99% of all the…
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What’s Killing Gray Whales? (Hint: It’s Not Wind Energy)
Scientists are sounding the alarm about a gray whale crisis up and down the Pacific Coast. The culprits are well documented — and offshore wind isn’t one of them. San Francisco Bay is famous for its Golden Gate Bridge, its ferries, and its busy ports. But lately, locals have been noticing something new in those waters: gray whales. Huge, barnacle-covered, and beautiful — they’ve been showing up in growing numbers since 2018. Their arrival has brought both wonder and worry. People line the shores to watch them feed and swim. Researchers race to understand why so many of them are starving. And too often, the whales end up dead. In…
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Red Flag Warning: Why Wildfires Are Everyone’s Problem Now
You’ve probably heard the phrase “red flag warning” lately. It might sound like complicated weather talk — but it’s actually a warning we all need to take seriously. A red flag warning means conditions are perfect for a wildfire to ignite quickly and spread even faster. All it takes is: One spark. That’s it. And suddenly, you have a wildfire. This isn’t just a hypothetical — it’s happening right now, across the country. In Georgia, fires are behaving in extreme ways: racing forward with the wind and hurling embers ahead of the flames, destroying homes and infrastructure in their path. As of April 25, 2026, a dangerous combination of severe…
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Truth or Trickery? How to Tell Science from Propaganda
I spend way too much time on social media platforms. I often come across various forms of propaganda and disinformation, especially about climate change and renewable. Bots create some of these posts. Bad actors funded by billionaires and dirty energy produce others, and some come from people who genuinely can’t distinguish between science and propaganda. The Early Days of Propaganda in America Even though the word propaganda became popular in the United States around World War I, the idea behind it is much older. One of the first groups to use it were the ancient Greeks. They didn’t have printed ads or movies like we do today, but they still…
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Earth’s Energy Imbalance: Why Our Planet Is Heating Up
Have you ever stepped outside on a sunny day (it’s 78 today where I live!) and felt the warmth of the Sun on your skin? That sunlight is energy—and it’s what keeps our planet livable. But here’s the problem: Earth is now taking in more energy than it sends back out to space. Scientists call this an energy imbalance, and it’s the main reason our planet is warming. Scientists have been tracking this imbalance since the late 1980s. But things really improved in 2000, when Terra satellite began collecting detailed data using NASA’s CERES instrument. That mission gave us the first long-term, high-accuracy global record of Earth’s energy imbalance. How…
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Solar Breakthrough: More Energy from the Same Sunlight
Japanese and German scientists have made a big breakthrough in solar energy—and it could change how much power we get from the sun. Normally, solar panels follow a basic rule: one particle of light (called a photon) creates one unit of energy. Because of this, there’s been a “limit” on how efficient solar panels can be. In fact, they usually capture only a fraction of the sunlight that hits them. But now, researchers have found a way to go beyond that limit. They used a special process called singlet fission. This lets one particle of light split its energy into two usable energy packets instead of just one. To make…
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Are Hair Products Safe? New Report Finds Cancer-Linked Ingredients
A new report raises serious concerns about cancer-linked ingredients in some hair products sold in stores like Sally Beauty. Researchers found that many of these products—especially those marketed to Black women and other women of color—may contain chemicals linked to cancer and other health problems. What Did the Researchers Find? Scientists tested hundreds of hair products made for curly, coily, and textured hair. These included things like hair relaxers, straightening creams, conditioners, and styling products. They discovered that many of these products contain toxic chemicals that can release formaldehyde, a substance known to cause cancer. Even when formaldehyde isn’t listed on the label, some ingredients can turn into it when…
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California’s Next Megaflood May Be Closer Than You Think
Scientists like Daniel Swain are studying something called megafloods, which are really, really big floods that can last for weeks and cover large parts of a region with water. These aren’t normal floods from a thunderstorm — they’re massive events caused by long periods of extreme rain and storms. I decided to write about this after three powerful storms recently slammed parts of California. Some neighborhoods in Los Angeles even flooded. I went to college in LA and lived there from 2002 to 2022. In all those years, I never saw fires and floods like the ones we’re seeing now. The weather feels different — more intense, more extreme. It…
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Big Changes Are Happening in a Very Salty Part of the Ocean
Scientists found that part of the southern Indian Ocean, the water off the west coast of Australia, is losing a lot of salt much faster than expected. Normally this area is one of the saltiest parts of the ocean, but now it’s getting fresher (less salty) very quickly — and that seems to be connected to climate change. You might ask, “Who cares?” Why Salt Matters in the Ocean Salt changes how heavy water is. This sinking and rising movement helps power giant ocean currents — sometimes called the ocean’s “conveyor belt.” These currents move heat and nutrients all around the planet. But now, research shows the salty region in…
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Why AI Data Centers Need So Much Water
You’ve probably heard how fast artificial intelligence (AI) is growing — things like chatbots, smart apps, and online games all use powerful computers hidden inside data centers. These buildings are full of servers (big, fast computers) that help process all the information we send and get online. But what most people don’t think about is that these huge computer hubs need a LOT of water, and that’s causing real problems in places like Texas, Virginia, California, and Arizona. What Do Data Centers Actually Do? When you send a text, stream a video, ask an AI a question, or post a photo, it doesn’t just float around in the air. That…
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Did You Know Penguins Live in Africa? Color One!
Did you know there are penguins in Africa? It surprises a lot of people—but it’s true! African penguins live along the coasts of South Africa and Namibia. And right now, these tuxedo-wearing birds are fighting for their lives. African penguins are facing a serious food crisis. Scientists and wildlife experts say many of them are starving because they simply can’t find enough fish to eat. This isn’t just a bad year—it’s part of a long-term problem that has pushed African penguins to the edge of extinction. In fact, African penguins are now listed as critically endangered, which means they could disappear forever if things don’t change soon.
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African Penguins: Cute, Unique, and Critically Endangered
Did you know there are penguins in Africa? It surprises a lot of people—but it’s true! African penguins live along the coasts of South Africa and Namibia. And right now, these tuxedo-wearing birds are fighting for their lives. African penguins are facing a serious food crisis. Scientists and wildlife experts say many of them are starving because they simply can’t find enough fish to eat. This isn’t just a bad year—it’s part of a long-term problem that has pushed African penguins to the edge of extinction. In fact, African penguins are now listed as critically endangered, which means they could disappear forever if things don’t change soon. What Do African…
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The Energy Source That Never Sleeps: Geothermal
An exciting new study led by Mark Jacobson at Stanford University found that using geothermal energy—which is power from heat deep inside the Earth—could be a big help in moving the world toward clean, renewable energy. Geothermal energy works kind of like this: deep underground the rock is super hot, and we can turn that heat into electricity that doesn’t produce pollution. The cool thing is, it can run 24/7—even when the sun isn’t shining and the wind isn’t blowing. This study shows that if we add this underground heat energy to wind, solar, and batteries, we wouldn’t need as much land or as many big energy systems to make…
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N2O – The Greenhouse Gas No One Talks About (But Should)
When people talk about climate change, two gases usually steal the spotlight: carbon dioxide (CO₂) and methane (CH₄). But there’s another greenhouse gas quietly heating up the planet—nitrous oxide (N₂O)—and most people hardly ever hear about it. I live in one of the most diverse and vibrant agricultural regions in the state. Here, winegrapes, olive trees, berries, and vegetables grow side by side, set against rolling green hills—at least in the winter. Farming is part of everyday life here. And that’s exactly why nitrous oxide matters so much. It’s closely tied to how we grow food, and even though it’s often overlooked, it packs a powerful climate punch. What Is…
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Is the World Running Out of Fresh Water?
A new report from the United Nations (UN) warns that the world is running out of fresh water. The UN says we’ve entered a time called “water bankruptcy,” which means many places are under extreme water stress. Water stress happens when a community is using almost all the water it has—so there’s very little left to share. This often happens because water isn’t managed well, and climate change makes things worse by bringing longer droughts and less predictable rainfall. Many Big Cities Are Running Out of Fresh Water New research shows that about half of the world’s 100 biggest cities are running out of fresh water. That means places where…
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The CO₂ Fingerprint: Proving Where Extra Carbon Comes From
If Earth had a detective story, carbon dioxide would be one of the biggest clues. Scientists know the amount of CO₂ in the air is rising—but the big question is why. Is it volcanoes? The ocean? Natural changes? Or is it us? It turns out carbon leaves behind a kind of fingerprint. By studying tiny differences inside carbon atoms, scientists can tell where that carbon came from. When they looked closely at the CO₂ building up in the atmosphere, the evidence pointed clearly in one direction: human activities, especially burning coal, oil, and gas. This carbon clue is called the Suess Effect, and it helps explain how scientists know the…
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Vehicle-to-Grid (V2G): When Electric Cars Become Energy For All
It’s time for some good news! Vehicle-to-Grid (V2G) is a new way for electric cars to not just charge from the grid, but also send electricity back when it’s needed. It’s like using your car’s battery as a giant shared battery that helps keep power flowing in your town. Electricity goes both ways — into the car and back out to help homes and the grid. Vehicle-to-Grid (V2G) Bidirectional Charging Explained Vehicle-to-Grid (V2G) is a smart way for electric cars to both take electricity and give it back. Most cars today only do one thing:👉 Electricity flows one way — from the grid into the car. With V2G, electricity can…
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Why Last Year Wasn’t the Warmest On Record
2025 was the third-warmest year ever recorded on Earth, according to Berkeley Earth. Only 2024 and 2023 were hotter. We’re emitting more CO2 every year, so why wasn’t last year this year even warmer? Even though Earth is warming over the long run, not every single year will be warmer than the one before it. That’s because natural climate patterns, like El Niño and La Niña, can give the planet little “boosts” or “breaks” from heat for a year or two. Right now, we’re experiencing La Niña conditions. Here’s an easy way to think about it: El Niño = temporary warming boost During an El Niño, the trade winds relax,…
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How We Know What Earth’s Climate Was Like Long Ago
Part Three In Part One, we explored how scientists measure climate change right here on Earth’s surface.In Part Two, we looked at how satellites in space track changes across the whole planet. Now comes Part Three—one of the coolest parts of climate science: How scientists learn about Earth’s climate long before thermometers and satellites existed. So how do we know what Earth’s climate was like hundreds, thousands, or even millions of years ago? The answer: Earth keeps records of its own past. Scientists call this paleoclimate data—natural clues that reveal what the climate used to be like. Ice Cores: Climate Time Capsules One of the most powerful climate records comes…
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Eyes in the Sky: How Satellites Track Earth’s Changing Climate
In Part One of this series, we learned how scientists measure climate change right here on Earth’s surface—using weather stations, ocean tools, and field surveys. In Part Two, we zoom out to space. Satellites help scientists see the whole planet. Together with ground measurements, they let scientists spot small changes up close and big patterns around the world. Think of satellites and aircraft as super-smart Earth cameras, orbiting the planet 24/7 and checking Earth’s vital signs. Here’s how they do it. They Measure Earth’s Temperature Satellites also measure temperature—but not with thermometers. Instead, they measure the energy (brightness) coming from Earth’s surface and atmosphere. Scientists use computer models to turn…
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How Do We Know That Earth’s Climate Is Changing?
Part One Many people wonder how scientists can be so sure Earth’s climate is changing. After all, our planet is huge, and the weather changes every day. A cold day or a big storm can make climate change feel confusing. The answer is simple: scientists don’t rely on just one piece of evidence or a single tool. Instead, they look at the big picture. They use many different kinds of measurements, collected in different ways, over long periods of time. All of these clues point to the same conclusion. Scientists know Earth’s climate is changing in three main ways. They measure temperatures, rainfall, and sea level right here on Earth’s…
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The Big Thaw: What’s Happening to Earth’s Ice Right Now
Earth’s ice might seem far away—at the top of the world or high on a mountain—but it quietly helps keep Earth livable. Frozen oceans reflect sunlight, glaciers store freshwater, and icy ground holds ancient carbon in place. Together, these frozen parts of our planet are called the cryosphere, and they act like Earth’s natural air conditioner. As 2025 comes to an end, scientists are taking a hard look at how that system is doing. The answer is sobering. From shrinking sea ice at the poles to retreating glaciers and thawing permafrost, Earth’s ice is changing faster than expected. What’s happening in these frozen places doesn’t stay there—it affects sea level,…
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A Planet Under Pressure: Global Emissions in 2025
As 2025 wraps up (even though it feels like it just started!), here’s a quick update on global greenhouse gas emissions. Sadly, the news isn’t great—our three biggest heat-trapping gases are still risi Carbon Dioxide (CO2) Emissions CO₂ is one of the main greenhouse gases. Greenhouse gases act like a blanket around Earth, trapping heat. We need some of them to keep the planet warm enough for life, but too much makes Earth heat up too fast. CO₂ comes from burning fossil fuels like coal, oil, and natural gas. It also comes from wildfires and volcanoes. Scientists have been measuring CO₂ since 1958 at the Mauna Loa Observatory in Hawaii.…
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To My Kids and Grandkids, I Will Never Stop Fighting
Some of you may know that I’ve been fighting for offshore wind in California. Right now, it feels like those of us who care about keeping our planet livable are losing ground. Recently, the fossil fuel industry won again. They have managed to stall or shut down offshore wind projects all over the world, helped by the current political administration — leaving China as the only major country still moving forward at full speed. They keep finding new ways to block progress. They pour money into ads, lawsuits, and even local groups pretending to be “environmental organizations” that spread fear and false information. They’ll use anything—misleading photos, rumors, and scare…
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The Great Recycling Adventure Quiz
Hey kids! Are you 14 years old or younger? If so, get ready for the great recycling adventure quiz! If you want to prepare, there are some great resources at the back of the quiz. I’ll also list them below. Recycling matters because it helps protect the planet we all depend on — and it’s something everyone your age can do that actually makes a difference. After you learn the facts, share them with your family members! Did you know that recycling: Saves natural resources. Everything we use comes from somewhere. Paper comes from trees, metal comes from rocks underground, and plastic comes from fossil fuels. When we recycle, we…
Earth Advocacy for Future Generations
