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By Jacopo Prisco, CNN (CNN) — It stands to reason that a 95 million-year-old tooth shipped to my home would have a rich past. But what ensued after I bought it online for about $100 revealed how, for such relics and those who covet them, the present is in some ways much more complicated. I

By Laura Paddison, CNN (CNN) — Talks to finalize the world’s first treaty on plastic pollution in Geneva, Switzerland collapsed in failure Friday as countries remained bitterly divided how to tackle the crisis. The summit, held at the United Nations headquarters and attended by delegates from more than 180 countries, was supposed to end Thursday

By Andrew Freedman, CNN (CNN) — Satellites, including those used for GPS and communications, will face greater risks in coming decades during solar-triggered geomagnetic storms because of the effect climate pollution has on Earth’s atmosphere, a new study found. The increasing volume of planet-warming carbon dioxide in the upper atmosphere is likely to make the

By Ella Nilsen, CNN (CNN) — Time is running out for US consumers to get money back for rooftop solar installations, electric vehicles, energy efficient appliances and more after President Donald Trump and Republicans slashed clean energy out of the tax code last month. And the potential savings are steep. The federal tax credit alone

By Ashley Strickland, CNN (CNN) — A rare Martian meteorite, billed as the largest piece of Mars on Earth, captured attention when it fetched millions from an anonymous bidder at a recent Sotheby’s auction. But the move has caused Niger, the country in West Africa where the space rock was initially found, to question the

CNN By Gina Park, CNN (CNN) — It’s finally time to watch one of the best meteor showers of the year: the brilliant display known as the Perseids. The Perseid meteor shower, which is known for producing dozens of bright meteors that leave long streaks in their wake, peaked at 4 p.m. ET Tuesday. In

By Marlowe Starling, CNN (CNN) — Marine researchers exploring extreme depths say they have discovered an astonishing deep-sea ecosystem of chemosynthetic life that’s fueled by gases escaping from fractures in the ocean bed. The expedition revealed methane-producing microbes and marine invertebrates that make their home in unforgiving conditions where the sun’s rays don’t reach, according

CNN By Jackie Wattles, Ashley Strickland, CNN (CNN) — Famed NASA astronaut Jim Lovell, who commanded the harrowing Apollo 13 mission that was forced to abandon a lunar landing attempt in 1970, has died. He was 97. Lovell died on August 7 in Lake Forest, Illinois, according to a NASA news release. The cause of

By Jackie Wattles, Ashley Strickland, CNN (CNN) — Famed NASA astronaut Jim Lovell, who commanded the harrowing Apollo 13 mission that was forced to abandon a lunar landing attempt in 1970, has died. He was 97. Lovell died on August 7 in Lake Forest, Illinois, according to a NASA news release. The cause of death

By Ella Nilsen, Andrew Freedman, CNN (CNN) — Dozens of veteran climate scientists are launching a coordinated response to a Trump administration report that casts doubt on the severity of climate change. The report, released last week alongside proposals to deregulate some polluting sectors, was authored by five researchers well-known for sowing doubt over the

By Gina Park, CNN (CNN) — Sky-gazers can catch a glimpse of the full moon at its peak illumination this week. August’s full moon, also called the sturgeon moon, will be visible from Friday night into the early hours of Saturday. It will be at its fullest around 3:55 a.m. ET Saturday, according to EarthSky.

By Ella Nilsen, CNN (CNN) — Energy Sec. Chris Wright said Tuesday night the Trump administration is updating the National Climate Assessments that have been previously published, which the administration recently removed from government websites. “We’re reviewing them, and we will come out with updated reports on those and with comments on those reports,” Wright

By Jackie Wattles, CNN (CNN) — Astronaut Butch Wilmore is retiring from NASA less than five months after he returned from a troubled test mission that left him aboard the International Space Station far longer than expected, the space agency announced Wednesday. Wilmore, along with NASA astronaut Suni Williams, piloted the first crewed flight of

By Taylor Nicioli, CNN (CNN) — Research vessel Blue Heron trawls the Great Lakes, gathering data from the water. The floating laboratory’s most recent discovery, however, came from an unexpected location: its own rudder. While docked after a long cruise to study algae blooms in lakes Erie and Superior in September, the crew noticed a

By Katie Hunt, CNN (CNN) — Scientists are exploring ways to mimic the origins of human life without two fundamental components: sperm and egg. They are coaxing clusters of stem cells – programmable cells that can transform into many different specialized cell types – to form laboratory-grown structures that resemble human embryos. These embryo models

By Laura Paddison, CNN (CNN) — Iran’s capital Tehran could be weeks away from “day zero,” experts say — the day when taps run dry for large parts of the city — as the country suffers a severe water crisis. Key reservoirs are shrinking, authorities are scrambling to reduce water consumption and residents are desperately

By Ashley Strickland, CNN (CNN) — A first-of-its-kind satellite has launched to track nearly imperceptible changes on Earth’s surface, an effort that could aid with responses to natural disasters. Called the NASA-ISRO Synthetic Aperture Radar mission, or NISAR, the spacecraft is equipped with two kinds of synthetic aperture radar designed by the US space agency

By Ella Nilsen, Andrew Freedman, CNN (CNN) — In one of its most significant reversals on climate policy to-date, the Trump administration on Tuesday proposed to repeal a 2009 scientific finding that human-caused climate change endangers human health and safety, EPA Administrator Lee Zeldin announced. If successful, the repeal could strip away the federal government’s

By Lianne Kolirin, CNN (CNN) — A 4,000-year-old handprint has been discovered on a clay model used for offerings in an Ancient Egyptian tomb. Researchers from Cambridge University’s Fitzwilliam Museum, in the United Kingdom, stumbled upon the imprint while preparing for an exhibition, which is set to open this fall. It was found on the

By Katie Hunt, CNN (CNN) — Neanderthals had a voracious appetite for meat. They hunted big game and chowed down on woolly mammoth steak as they huddled around a fire. Or so thought many archaeologists who study the Stone Age. Fresh meat was far from the only thing on the menu, according to a growing

By Ashley Strickland, CNN (CNN) — The asteroid known as 2024 YR4 is out of sight yet still very much on scientists’ minds. The building-sized object, which initially appeared to be on a potential collision course with Earth, is currently zooming beyond the reach of telescopes on its orbit around the sun. But as scientists

By Laura Paddison, CNN (CNN) — The soupy, smothering extreme heat that has scorched parts of the Northern Hemisphere this summer takes a hard toll on our bodies. It can make you feel nauseous, woozy and dehydrated. It can have pernicious health effects on multiple organs. But there’s another, less well-known, impact of extreme heat:

By Kameryn Griesser, CNN (CNN) — Paleontologists have discovered remarkable fossils in the Grand Canyon that reveal fresh details about the emergence of complex life half a billion years ago. The newfound remains of fauna from the region suggest that it offered ideal conditions for life to flourish and diversify, in a “Goldilocks zone” between

By Jack Guy, CNN (CNN) — Archaeologists have discovered the remains of a medieval knight, buried under a shuttered ice cream parlor in the Polish city of Gdańsk. Experts have been working at the site in the historic Śródmieście (city center) district since 2023, and initially uncovered a medieval tombstone decorated with the carved image

By Mindy Weisberger, CNN (CNN) — Lesser known than some other beloved tales of larger-than-life heroes such as Gilgamesh, Beowulf and King Arthur, the Song of Wade is a case study in what happens when stories aren’t written down. The epic was once widely known throughout medieval and Renaissance England — so popular that it

By Jack Guy, CNN (CNN) — A Ceratosaurus fossil that is one of only four known to exist has sold for $30.5 million at auction. The rare dinosaur fossil is “one of the finest and most complete examples of its kind ever found,” auction house Sotheby’s said in a statement published Wednesday. The specimen, which

By Jacopo Prisco, CNN (CNN) — A collision observed between two black holes, each more massive than a hundred suns, is the largest merger of its kind ever recorded, according to new research. A team of astronomers discovered the event, dubbed GW231123, when the Laser Interferometer Gravitational-Wave Observatory (LIGO) — a pair of identical instruments

By Katie Hunt, CNN (CNN) — Scientists have recovered ancient proteins from a fossilized rhinoceros tooth, breaking new ground in the study of ancient life on Earth. The 24 million-year-old tooth, which was unearthed in the Canadian Arctic, contains proteins that are 10 times older than the most ancient known DNA. Using the sample, scientists

By Jack Guy, CNN (CNN) — A meteorite that is the largest known piece of Mars on Earth is expected to fetch up to $4 million when it goes up for auction at Sotheby’s. Known as NWA 16788, the meteorite weighs 54 pounds (24.5 kilograms), massive compared with most Martian meteorites, which tend to be

By Gina Park, CNN (CNN) — Skygazers can look toward the horizon this week to catch a glimpse of the full moon around its peak illumination. This month’s full moon, also called the buck moon, will be at its fullest at around 4:37 p.m. ET on Thursday, according to EarthSky. That is, of course, during