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By Kameryn Griesser, CNN (CNN) — Hundreds of millions of flies dropping from planes in the sky might sound like a horrible nightmare, but experts say such a swarm could be the livestock industry’s best defense against a flesh-eating threat poised to invade the southwestern border of the United States. An outbreak of New World

By Jacopo Prisco, CNN (CNN) — A galaxy that has remained unchanged for 7 billion years — a rarity in the universe — has been observed by astronomers, offering a glimpse into cosmic history and adding to an enigmatic collection of objects called relics or “fossil galaxies.” These space oddities are galaxies that, after an

By Olivia Kemp, CNN (CNN) — An ancient Peruvian city that was a thriving hub of trade more than 3,000 years ago has been unveiled by archaeologists. Peñico is located in the Huaura province, north of the capital Lima, according to the Ministry of Culture in a press release sent to CNN. In what was

CNN By Renée Rigdon, Angela Fritz, CNN (CNN) — The waterways in Texas Hill Country have carved paths over the centuries through the granite and limestone, shaping the rocky peaks and valleys that make the region so breathtaking. When too much rain falls for the ground to absorb, it runs downhill, pulled by gravity into

By Katie Hunt, CNN (CNN) — Stone Age humans living by a lake in what’s now Germany systematically processed animal carcasses for fatty nutrients — essentially running what scientists describe as a “fat factory” to boil bones on a vast scale, according to new research. Archaeologists uncovered the factory by analyzing some 120,000 bone fragments

By Ella Nilsen, Rene Marsh, CNN (CNN) — The Environmental Protection Agency has placed roughly 140 employees on administrative leave days after they signed a public letter expressing concern about the treatment of federal employees and the Trump administration’s regulations on climate and public health. The EPA is conducting an “administrative investigation” into the employees,

By Ashley Strickland, CNN (CNN) — A newly discovered object speeding through our solar system is sparking excitement among astronomers because it’s not from around here. Believed to be a comet, the object is only the third celestial body from beyond our solar system ever to be observed in our corner of the universe. This

By Ella Nilsen, CNN (CNN) — The visitors who trek to America’s national parks are already noticing the changes, just months after President Donald Trump took office. “I’ve been visiting national parks for 30 years and never has the presence of rangers been so absent,” one visitor to Zion National Park wrote in National Parks

By Laura Paddison, Mitchell McCluskey, CNN (CNN) — A brutal heat wave is gripping many parts of Europe, leaving millions of people struggling to adapt to punishing, record-breaking temperatures. Heat persists even at night, with temperatures in some places not dipping much below 90 degrees. There is little respite. Air conditioning is very rare in

By Andrew Freedman, CNN (CNN) — The Trump administration’s proposed budget seeks to shut down the laboratory atop a peak in Hawaii where scientists have gathered the most conclusive evidence of human-caused climate change since the 1950s. The Mauna Loa laboratory in Hawaii has measured atmospheric carbon dioxide, which — along with other planet-warming pollution

By Jacopo Prisco, CNN (CNN) — Astronomers in Australia picked up a strange radio signal in June 2024 — one near our planet and so powerful that, for a moment, it outshined everything else in the sky. The ensuing search for its source has sparked new questions around the growing problem of debris in Earth’s

By Ella Nilsen, Matt Egan, CNN (CNN) — Business groups and clean-energy developers are apoplectic over a last-minute provision tucked into President Donald Trump’s spending bill that will tax the solar and wind industry, making it much harder to get new, cheap electricity onto the grid. Senate Republicans revealed an entirely new tax for renewable

By Katie Hunt, CNN (CNN) — A rocky outcrop in a remote corner of northern Quebec appears serene in its eerie isolation on the eastern shore of Canada’s Hudson Bay. But over the past two decades, this exposed remnant of ancient ocean floor, known as the Nuvvuagittuq Greenstone Belt, has been a heated scientific battleground

By Issy Ronald, CNN London (CNN) — Scientists have discovered a new species of dinosaur — one that was dog-sized and roamed what is now the United States around 150 million years ago alongside familiar dinosaurs like stegosaurus and diplodocus. The Enigmacursor mollyborthwickae, as researchers named it, was about the same size as a Labrador

CNN By Jackie Wattles, CNN (CNN) — A private astronaut mission that just took flight has exposed a new twist in a lingering — and potentially dangerous — issue at humanity’s most frequently visited destination in space. Axiom Space Mission 4, or Ax-4, lifted off from NASA’s Kennedy Space Center in Florida at 2:32 a.m.

By Katie Hunt, CNN (CNN) — A glob of 99 million-year-old amber has preserved an ancient fly in horror show fashion: with the mushroom-like fruiting body of zombie fungus bursting forth from its head. The insect, along with a second specimen of a young ant infected with a similar fungus, are two of the oldest

By Andrew Freedman, CNN (CNN) — The intensifying and expansive heat wave affecting around 150 million people in the United States from Wisconsin to Washington, DC, bears the hallmarks of human-caused global warming. Hundreds of daily temperature records are threatened during the next few days, particularly along the East Coast, and some all-time June high

CNN By Ashley Strickland, CNN (CNN) — The first test images from a groundbreaking observatory named for trailblazing astronomer Vera Rubin have captured the light from millions of distant stars and galaxies on an unprecedented scale and revealed thousands of previously unseen asteroids. While the National Science Foundation initially released only a couple of images

By Kameryn Griesser, CNN (CNN) — Whether it’s answering work emails or drafting wedding vows, generative artificial intelligence tools have become a trusty copilot in many people’s lives. But a growing body of research shows that for every problem AI solves, hidden environmental costs are racking up. Each word in an AI prompt is broken

By Jacopo Prisco, CNN (CNN) — Each year, a tiny species in Australia makes a grueling 620-mile (1,000-kilometer) nighttime migration, and it’s pulling off the feat in a way only humans and migratory birds have been known to do, a new study has found. Bogong moths looking to escape the heat travel in the spring

By Ella Nilsen, Bill Weir, CNN Chief Climate Correspondent SOUTHERN MAINE (CNN) — Colin Goodson knows more about energy than most people. The tall, bearded Mainer is an engineer on an offshore oil drilling ship in the Gulf of Mexico. But when it came time for him to build a home in Southern Maine, Goodson

By Laura Paddison, CNN (CNN) — Rising global temperatures are set to devastate food crops across the world, with particularly alarming impacts projected for the United States, where production of key crops could plummet 50% by the end of the century, according to a sweeping new analysis. Of the many impacts of the fossil fuel-driven

By Ashley Strickland, CNN (CNN) — Astronomers have used mysterious fast radio bursts, or millisecond-long bright flashes of radio waves from space, to help them track down some of the missing matter in the universe. Dark matter and dark energy make up most of the universe. Dark matter is an enigmatic substance that shapes the

By Andrew Freedman, CNN (CNN) — The human fingerprint on global warming was likely evident in Earth’s atmosphere far earlier than previously thought—even before the invention of modern cars, a new study says. Using a combination of scientific theory, modern observations and multiple, sophisticated computer models, researchers found a clear signal of human-caused climate change

By Ashley Strickland, CNN (CNN) — Scientists have identified a previously unknown 86 million-year-old dinosaur species that fills an early gap in the fossil record of tyrannosaurs, revealing how they evolved to become massive apex predators. Researchers analyzing the species’ remains have named it Khankhuuluu mongoliensis, which translates to “dragon prince of Mongolia,” because it

By Ella Nilsen, CNN (CNN) — The Environmental Protection Agency is proposing to scrap two major federal regulations that limit air pollution and planet-warming emissions from coal and gas-fired power plants, the agency’s head announced Wednesday. EPA Administrator Lee Zeldin said the proposal targets a rule regulating all planet-warming carbon emissions from existing and new

By Jack Guy, CNN (CNN) — New research revealing details of gold coins found aboard a shipwreck off Colombia provides further evidence that the vessel was the San José galleon, a 300-year-old Spanish warship believed to contain artifacts worth billions of dollars. Scientists used an unmanned underwater vehicle to survey the wreck and captured images