Eco Nana

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,…

Have you ever noticed how bright our planet looks from space? Earth usually reflects sunlight like a giant blue-and-white mirror. But scientists have discovered something surprising: Earth is losing it’s shine and is actually getting dimmer. What “Getting Dimmer” Means Our planet has a property called albedo, which is the fraction of sunlight that gets bounced back into space. Earth has been losing its shine for decades, reflecting less light back into space—and the amount of light reflected by the Northern Hemisphere is decreasing more quickly than that of the Southern Hemisphere, recent research suggests. For a long time, scientists believed both hemispheres reflected roughly the same amount of light.…

https://www.nature.com/articles/s43247-025-02768-2As our planet heats up, the Arctic is getting greener. I just read an interesting study about how all those new plants—especially shrubs—could be changing what’s going on underground in the frozen soils known as permafrost. For four years, scientists in northern Greenland ran an experiment to see what happens when frozen soil is exposed to air and mixed with dead plant bits, called litter. They were trying to picture what the Arctic might look like as plants keep spreading north. The results were pretty wild: that extra plant material actually changed the DNA of the tiny microbes living in the soil! Those microbes got busier—and hungrier—breaking down old carbon…

Under the ocean’s surface, there’s an underwater symphony. Blue whales and other marine mammals fill the water with songs and calls, almost like an underwater orchestra. To eavesdrop on this symphony, scientists use special tools called hydrophones — microphones designed to work underwater. In this case, researchers used a hydrophone anchored 3,000 feet below the surface. What Did the Scientists Find? Over six years, researchers from the Monterey Bay Aquarium noticed something troubling along the California Coast. Blue whales and fin whales began singing less often when the ocean got unusually warm. Scientists say the silence is a serious warning. Meanwhile, some whales that eat lots of different things (like…

Imagine this: you’re walking across the frozen tundra in Siberia and—whoa—there’s a giant hole in the ground, big enough to swallow a house. No, it’s not a scene from a sci-fi movie. These craters are real, and scientists have been finding more of them over the past decade. The big question: what’s going on? What’s Hiding Under the Ice? Siberia is covered in permafrost, soil that usually stays frozen solid all year long. But, as the planet heats up, permafrost is thawing faster than ever. That’s already causing big problems you can see—like sinkholes opening up, telephone poles leaning, roads and runways cracking, and forests where trees just topple over.…

As a scuba diver, I’ve seen the wonders of the undersea world—brilliant coral reefs, swaying seagrass meadows, and the incredible creatures that call these places home. That’s why what happens with bottom trawling feels so devastating. Picture this: a huge fishing boat drags a massive, weighted net across the seafloor. It tears through everything in its path, scooping up fish. At the same time, it crushes coral reefs, seagrass meadows, and habitats that have taken centuries to grow. Behind it, clouds of dark mud swirl like an underwater storm. Even stingrays and baby sharks get trapped, with no chance of escape. This method, called bottom trawling, is one of the…