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The Arch of Caligula at the archaeological site of Pompeii

A Pompeii site reveals the recipe for Roman concrete. It contradicts a famous architect’s writings

By Taylor Nicioli, CNN (CNN) — Along with its many other innovations, the Roman Empire revolutionized architecture with never-before-seen features, such as large-scale arches and dome roofs. And many of these structures still stand today despite being more than 2,000 years old. None of it would have been possible without the Romans’ infallible building material:

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Elon Musk and Hans Koeningsmann embrace during a post-flight news conference following the successful launch of SpaceX's CRS-8 mission to resupply the International Space Station in 2016.

He spent 20 years at SpaceX. Now, he’s making history with its biggest competitor

By Jackie Wattles, CNN (CNN) — A Blue Origin rocket will soon launch carrying an unconventional passenger in a history-making moment made possible by a high-profile former employee of the company’s biggest rival. Michaela Benthaus, an aerospace and mechatronics engineer at the European Space Agency, will be aboard the mission, known as NS-37, and become

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The National Center for Atmospheric Research's Mesa Laboratory

The Trump admin is closing a critical research center in Colorado as president spars with the state’s governor

By Andrew Freedman, CNN NEW ORLEANS (CNN) — Stress balls were the swag item of choice at the National Center for Atmospheric Research’s booth Wednesday morning, during the world’s largest gathering of climate scientists. NCAR representatives came to this meeting — the convention of the American Geophysical Union — to talk about their research, which

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Drone footage captured the orcas and dolphins interacting. Pictured here are drone operator Keith Holmes of the Hakai Institute and researcher Taryn Scarff.

Some dolphins appear to have orca friends. Scientists think they have figured out what’s going on

By Katie Hunt, CNN (CNN) — A pod of Pacific white-sided dolphins off the coast of British Columbia have been observed cooperating with orcas, a traditional enemy that’s better known for taking out great white sharks than friendly interaction. Scientists say they have documented the dolphins and a local population of killer whales known as

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Thwaites Glacier in Antarctica

Underwater ‘storms’ are eating away at the Doomsday Glacier. It could have big impacts on sea level rise

By Laura Paddison, CNN (CNN) — Swirling underwater “storms” are aggressively melting the ice shelves of two vital Antarctic glaciers, with potentially “far-reaching implications” for global sea level rise, according to a recent study. Antarctica is like a fist with a skinny thumb stuck out toward South America. Pine Island Glacier is near the base

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Meerkats

Just how monogamous are humans? Scientists break down how we compare with other animals

By Jack Guy, CNN (CNN) — Humans are far more monogamous than our primate cousins, but less so than beavers, a new study suggests. Researchers from the University of Cambridge in England analyzed the proportion of full siblings versus half-siblings across several animal species, as well as various human populations throughout history. Species and societies

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