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By Ashley Strickland, CNN (CNN) — Astronomers have observed a planet that in some ways behaves more like a star — including a massive growth spurt unlike anything witnessed before in a free-floating planet. The rogue planet, which does not orbit any star, is called Cha 1107-7626 and is outside of our solar system, 620

By Christopher Lamb, CNN (CNN) — Pope Leo XIV has called for pressure to be placed on governments to protect the environment as he stressed that damaging the natural world is incompatible with the Christian faith in a speech at a climate conference Wednesday. “We cannot love God, whom we cannot see, while despising his

By Andrew Freedman, CNN (CNN) — While the Trump administration wages war against clean energy, it is now vowing to lease millions of acres of public lands at a discount and spend hundreds of millions of dollars to prop up the most polluting source of electricity: coal. This comes as the administration has restricted new

By Katie Hunt, CNN (CNN) — Scientists have used human skin cells to create fertilizable eggs capable of producing early embryos, an advance that could expand possibilities for fertility treatment, according to new research. The proof-of-concept study, published Tuesday in the journal Nature Communications, involved taking the nucleus, the part of the cell that contains

By Amanda Schupak (CNN) — What do you get when you cross a blue jay with a green jay? That’s not the start of a joke, but the subject of a new study that aims to describe a hybrid bird never encountered before in the wild. The bigger question scientists are puzzling over, though, is

By Katie Hunt, CNN (CNN) — A badly crushed cranium unearthed decades ago from a riverbank in central China that once defied classification is now shaking up the human family tree, according to a new analysis. Scientists digitally reconstructed the squashed skull, thought to be 1 million years old, and its features suggest that the

By Ella Nilsen, Andrew Freedman, CNN (CNN) — In a consequential move for the global climate, China committed Wednesday to reduce its planet-warming pollution by 7% to 10% from peak levels over the next decade. China’s new economy-wide goal takes on outsized importance given the country is both the biggest emitter of global warming pollutants

By Andrew Freedman, CNN (CNN) — A new interactive map and groundbreaking database allows people in the world’s largest metropolitan areas to track their air pollution exposure, along with their region’s biggest sources of planet-warming pollution. The tool, which depicts air pollution plumes and their sources, is the work of a nonprofit coalition of scientists,

By Jack Guy, CNN (CNN) — Endangered leopard sharks have been observed mating in the wild for the first time, with scientists witnessing a “threesome” involving two males and a female. The encounter was filmed by Hugo Lassauce, a marine biologist at the University of the Sunshine Coast, Australia, and documented in a research paper

By Ashley Strickland, CNN (CNN) — Surrounding our solar system is a natural and enigmatic cosmic shield called the heliosphere — and a new mission has launched to help astronomers better understand it. Created by the solar wind, a constant flow of charged particles that stream away from the sun, the heliosphere acts as an

By Amarachi Orie, CNN Day-one fans of Taylor Swift know that the pop superstar has come a long way since launching her music career as a country singer — and that evolution is apparent in her dialect, according to speech scientists. From Tennessee to Pennsylvania to New York, the career of the 14-time Grammy award

By Laura Paddison, CNN (CNN) — Many parts of world are predicted to endure “day-zero droughts,” periods of extreme and unprecedented water scarcity, which could happen as soon as this decade in certain hotspots including parts of North America, the Mediterranean and southern Africa, according to a new study. It’s well known that climate change,

By Jackie Wattles, CNN (CNN) — NASA on Monday introduced the 10 people — selected from a pool of 8,000 applicants — who will join the agency’s astronaut corps as it races to return to the moon before attempting an unprecedented crewed mission to Mars. The group includes six women and four men, whom acting

By Ashley Strickland, CNN (CNN) — Astronomers are trying to understand what caused a series of gamma ray bursts, or GRBs — the most powerful explosions in the universe. These energetic bursts are typically unleashed by the incendiary death of a star, or when it is shredded by a black hole. The observation of repeating

By Gina Park, CNN (CNN) — Sky-gazers should get ready for a full day of celestial events on Sunday, including a partial solar eclipse in parts of the Southern Hemisphere. The partial solar eclipse will peak, the point at which the moon blocks the largest portion of the sun’s surface, at 3:41 p.m. ET. But

By Ashley Strickland, CNN (CNN) — A violent storm may have sent two baby pterosaurs spiraling to their deaths in a lagoon about 150 million years ago, based on a new analysis of the tiny, astonishingly well-preserved fossils. This latest research also provides fresh clues that may unravel a broader enduring mystery surrounding the site

By Andrew Freedman, CNN (CNN) — A record-breaking and astonishingly expansive marine heat wave is underway in the Pacific Ocean, stretching about 5,000 miles from the water around Japan to the West Coast of the United States. The abnormally warm “blob” of ocean water, which is getting a significant boost from human-caused global warming, is