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By Issy Ronald, CNN London (CNN) — A hoard of Norman-era silver coins unearthed five years ago in southwestern England has become Britain’s most valuable treasure find ever, after it was bought for £4.3 million ($5.6 million) by a local heritage trust. For the group of seven metal detectorists who discovered the 2,584 silver pennies

By Ashley Strickland, CNN (CNN) — A massive space rock, estimated to be the size of four Mount Everests, slammed into Earth more than 3 billion years ago — and the impact could have been unexpectedly beneficial for the earliest forms of life on our planet, according to new research. Typically, when a large space

By Taylor Nicioli, CNN (CNN) — The famous Halley’s comet is about halfway through its roughly 76-year orbit of the sun, having reached its farthest point from its host star in December 2023. The comet won’t be visible in the night sky until 2061. But the debris the comet leaves in its trail — otherwise known as

By Ashley Strickland, CNN (CNN) — A mile and a half beneath the ocean’s surface, the seafloor seems nearly as alien as the surfaces of other planets. Deep-sea volcanic ridges, formed by the collisions of tectonic plates, create underwater hot springs in an otherwise frigid environment. These hydrothermal vents belch warm towers of elements that

By Ashley Strickland, CNN (CNN) — For nearly two centuries, scientists have tried to solve an enduring mystery about a giant millipede-like animal named Arthropleura that used its many legs to roam Earth more than 300 million years ago. Now, two well-preserved fossils of the creature unearthed in France have finally revealed what Arthropleura’s head

Story by Reuters (CNN) — The mass bleaching of coral reefs around the world since February 2023 is now the most extensive on record, the National Oceanic and Atmospheric Administration told Reuters this week. A staggering 77% of the world’s coral reef areas — from the Atlantic to the Pacific to the Indian oceans — have so far been subjected to bleaching-level heat stress,

By Katie Hunt, CNN (CNN) — The origin of modern humans’ long-standing love affair with carbs may predate our existence as a species, according to a new study. A once prevailing stereotype of ancient humans feasting on mammoth steak and other hunks of meat helped foster the idea of a protein-heavy diet that was necessary

By Ella Nilsen, CNN (CNN) — Clean energy executive Cary Kottler was one of millions who lost power and heat as winter storm Uri, as it was called, blasted Texas with a historic cold snap in 2021. The temperature inside his house hovered just above the freezing mark. Kottler’s family goldfish froze in its tank.

By Taylor Nicioli, CNN (CNN) — For the first time, scientists have found evidence that marine mammals could be inhaling microplastics, according to new research that detected the potentially harmful particles in the breath of bottlenose dolphins off the coasts of Louisiana and Florida. Microplastics are small pieces of plastic defined as less than 5 millimeters

By Laura Paddison, CNN (CNN) — Humanity has thrown the global water cycle off balance “for the first time in human history,” fueling a growing water disaster that will wreak havoc on economies, food production and lives, according to a landmark new report. Decades of destructive land use and water mismanagement have collided with the

By Ashley Strickland, CNN (CNN) — Scientists have uncovered communities of animals such as tube worms and snails living in volcanic caves beneath the seafloor, revealing a previously unknown but thriving ecosystem. Researchers made the astonishing discovery during a 30-day expedition aboard the Schmidt Ocean Institute’s research vessel “Falkor (too)” to explore an undersea volcano

By Jack Guy, CNN (CNN) — Researchers have discovered a distant disc galaxy that has surprisingly similar characteristics to our own Milky Way, and it could change our understanding of how galaxies form. The galaxy, which has been named REBELS-25, is far more orderly than the existing science suggests it should be for its age,

By Stephanie Elam, CNN Los Angeles (CNN) — Beautiful beaches. Majestic mountains. Hollywood. One more thing Southern California is known for: earthquakes. Yet for a long time, and to the great relief of millions, the many active faults that claw and tear through the earth have been relatively quiet. That peace has been recently shaken by several

By Ashley Strickland, CNN (CNN) — A mission to study one of the solar system’s most promising environments that may be suitable for life has lifted off. NASA’s Europa Clipper spacecraft — designed to explore its namesake, Jupiter’s moon Europa — launched aboard a SpaceX Falcon Heavy rocket Monday at 12:06 p.m. ET from NASA’s

CNN By Ashley Strickland, CNN (CNN) — A mission to study one of the solar system’s most promising environments that may be suitable for life has lifted off. NASA’s Europa Clipper spacecraft — designed to explore its namesake, Jupiter’s moon Europa — launched aboard a SpaceX Falcon Heavy rocket Monday at 12:06 p.m. ET from

By Jackie Wattles and Ashley Strickland, CNN (CNN) — SpaceX successfully launched the latest test flight of Starship Sunday morning, the most powerful rocket system ever constructed, which could one day be used to carry humans to the moon and Mars. Liftoff of the Super Heavy rocket booster, topped with the uncrewed Starship spacecraft, occurred at

By Jackie Wattles, CNN (CNN) — Federal regulators granted SpaceX its long-awaited license to move forward with a fifth uncrewed test launch of Starship, the most powerful rocket system ever constructed. The US Federal Aviation Administration, which licenses commercial rocket launches, announced Saturday that SpaceX had “met all safety, environmental and other licensing requirements for

By Rachel Ramirez, CNN (CNN) — William Fulford moved from Virginia Beach, Virginia, to a new waterfront development in Florida in 2023. Nestled between Sarasota Bay and the southwestern part of Tampa Bay, the new home by Bradenton Beach was everything Fulford, a retired custom homebuilder, ever wished for. The developers of the new Hunters