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By Mindy Weisberger, CNN (CNN) — Fashion is fickle and styles come and go — even for orcas, apparently. In 1987, a group of killer whales off the northwestern coast of North America briefly donned salmon “hats,” carrying dead fish on their heads for weeks. Recently, a male orca known as J27, or “Blackberry,” was

By Alex Rodway, CNN (CNN) — On one of his first trips to study wolves in Ethiopia in the late 1980s, biologist Claudio Sillero observed a highly unusual behavior: these local predators were deliberately licking the vibrant flowers of the red hot poker plant that grows in the country’s highlands. Relatively few mammals have been

By Issy Ronald, CNN (CNN) — Ancient ancestors of Native Americans, known as the Clovis people, mostly ate mammoths and other large animals during the most recent ice age, according to a new study. Scientists examined the chemical signatures left by food items in the remains of an 18-month-old child who was buried about 13,000

By Laura Paddison, CNN (CNN) — Millions of tons of coal ash leftover from burning the planet’s dirtiest fossil fuel are sitting in ponds and landfills, able to leach into waterways and pollute soil. But this toxic waste may also be a treasure trove for the rare earth elements needed to propel the world toward

By Laura Paddison, CNN (CNN) — Last year was the hottest on record, oceans boiled, glaciers melted at alarming rates, and it left scientists scrambling to understand exactly why. They know the extraordinary heat was fueled by a number of factors, predominantly planet-heating pollution from burning fossil fuels and the natural climate pattern El Niño.

By Jackie Wattles and Kristin Fisher, CNN (CNN) — NASA’s Artemis program, which aims to return astronauts to the moon this decade amid a renewed international push for lunar exploration, is facing more delays. The agency said Thursday that a planned mission to land on the moon in 2026 will now take place no earlier

By Amy Gunia and Hazel Pfeifer, CNN (CNN) — The patient is submerged in an ice bath as an anesthetic for its impending surgery. When sufficient numbness is achieved, University of Queensland student Lachlan Fitzgerald begins the procedure, carefully attaching a tiny circuit board to its back to create a part-living, part-machine biohybrid robot. The

By Katie Hunt, CNN (CNN) — Tiny artifacts unearthed at a Wyoming site where a mammoth was butchered 13,000 years ago are revealing intriguing details about how the earliest Americans survived the last ice age. Archaeologists found 32 needle fragments made from animal bone buried almost 15 feet (nearly 5 meters) underground at the La

By Rosa Rahimi, CNN London (CNN) — The dynamics between predator and prey are laid bare in a striking image of fish being attacked by sharks in the shallow waters of the Maldives, which has claimed the top prize in this year’s Royal Society Publishing Photography Competition. Photographer Angela Albi, a postdoctoral researcher at the

By Ashley Strickland, CNN (CNN) — NASA engineers have successfully restored contact with Voyager 1 and the spacecraft is operating normally after its dwindling power supply caused a weekslong blackout. The issue began in October when the aging probe automatically switched from its primary X-band radio transmitter and began relying on a much weaker S-band

By Michelle Cohan, CNN (CNN) — For runners, footwear is one of the most important – and often most expensive – pieces of gear. Experts say the typical lifespan of a traditional running sneaker falls between 500 to 700 kilometers (310 to 435 miles), or about four to six months, depending on usage. With some

By Ashley Strickland, CNN (CNN) — The James Webb Space Telescope has captured a surprising new view of a long-studied galactic neighbor, the Sombrero galaxy, revealing a perspective that looks quite different from the wide-brimmed Mexican hat for which it was named. Taken with the space observatory’s Mid-Infrared Instrument, or MIRI, the image showcases the

By Jack Bantock and Gisella Deputato, CNN (CNN) — Since the dawn of farming some 10,000 years ago, the health of agriculture has been inextricably linked to the health of the planet. Now the climate crisis is disrupting farming across the globe. Yet as increasingly unpredictable weather patterns and temperature changes threaten crops, one startup

By Katie Hunt, CNN (CNN) — An orca pod in the Pacific Ocean off the coast of Mexico has devised a cunning strategy to hunt and kill whale sharks — the world’s largest fish that can grow up to 18 meters (60 feet) in length — new research has revealed. While anecdotal evidence had previously

By Katie Hunt, CNN (CNN) — More than 1.5 million years ago, two different species of ancient human crossed paths on a lakeshore, perhaps locking eyes with each other. These early forerunners of Homo sapiens wandered in a landscape teeming with wildlife, including giant maribou storks that stood 2 meters (6.5 feet) tall. A stunning

By Rachel Ramirez, CNN New York (CNN) — Walking around the urban oasis that is Brooklyn’s Green-Wood Cemetery, one wouldn’t expect to find pawpaws – the largest edible fruit native to North America – growing alongside tombstones. Stroll farther into the cemetery and American persimmons dangle above graves. While it may seem like an unlikely

By Katie Hunt, CNN (CNN) — The earliest dinosaurs were unremarkable, bit players on a supercontinent crowded with other ancient reptiles when they first evolved around 230 million years ago. Fast-forward 30 million years, however, and dinosaurs dominated the planet, coming in all shapes, sizes and forms, while many of their reptilian counterparts had died