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By Ashley Strickland, CNN (CNN) — Each day, radio signals from key communications and navigation satellites travel freely through a layer of…

By Katie Hunt, CNN (CNN) — With her mouth wide open, locked for eternity in what appears to be a scream, an ancient Egyptian woman captured the…

By Taylor Nicioli, CNN (CNN) — Other than being a symbol for love and romance, roses are commonly known for their sharp spikes — prickles…

By Jacopo Prisco, CNN (CNN) — A layer of diamonds up to 18 kilometers (11 miles) thick could be tucked below the surface of Mercury, the solar…

By Bill Weir, CNN Chief Climate Correspondent (CNN) — On some parts of an overheating Earth, the old complaint that “it’s not the heat,…

By Katie Hunt, CNN (CNN) — The 2010 discovery that early humans and Neanderthals once interbred was a scientific bombshell — the revelation…

By Mindy Weisberger, CNN (CNN) — An ancient buglike sea creature with a fan-shaped tail and a carapace that wrapped around its body swam upside…

By Katie Hunt and Ashley Strickland, CNN (CNN) — The northern lights could grace skies farther south than usual this week because of a solar…

By Taylor Nicioli, CNN (CNN) — Look up at the night sky this week for a chance to see high-speed meteors and bright fireballs from two meteor…

By Jacopo Prisco, CNN (CNN) — Four years ago, the unexpected discovery in the clouds of Venus of a gas that on Earth signifies life —…

By Laura Paddison, Jen Christensen, Mary Gilbert, Henry Zeris, Yukari Schrickel, Lou Robinson and Way Mullery (CNN) — Philip Kreycik should…

By Ashley Strickland, CNN (CNN) — Experimentation is the basis of the scientific process — and it’s at the heart of what it means to be…

By Ashley Strickland, CNN (CNN) — While Danish astronomer Tycho Brahe is best known for his celestial discoveries made in the 16th century —…

By Rebecca Cairns, CNN (CNN) — As Global Tiger Day rolls around, there’s good news for the big cats in Thailand. The tiger population in the…

By Ashley Strickland, CNN (CNN) — The NASA Perseverance rover may have found a pivotal clue that’s central to its mission on Mars: geological…

By Jackie Wattles, CNN (CNN) — SpaceX’s Falcon 9 rocket — the most prolific launch vehicle in the world — is ready to return to flight…

CNN By Jackie Wattles, CNN (CNN) — After weeks of troubleshooting and recent tests meant to replicate the issues plaguing Boeing’s Starliner…

By Jackie Wattles, CNN (CNN) — After weeks of troubleshooting and recent tests meant to replicate the issues plaguing Boeing’s Starliner…

By Issy Ronald, CNN (CNN) — Blushing was once thought to be the “most peculiar and most human of all expressions,” as Charles Darwin put…

By Ashley Strickland, CNN (CNN) — A glowing supernova remnant, a nebula shaped like a cat’s paw and the iconic “Pillars of Creation” are…

By Ella Nilsen, CNN (CNN) — Environmental Protection Agency administrator Michael Regan is bullish on his agency’s prospects against the…

By Jack Guy, CNN London (CNN) — Komodo dragons, the world’s largest species of lizard, have iron-tipped teeth that help them to rip their…

By Jackie Wattles, CNN (CNN) — Rare footage captured by a camera strapped to the back of an endangered shark shows the jarring moment it was…

By Ella Nilsen, CNN (CNN) — As Vice President Kamala Harris marches toward the Democratic nomination, climate advocates like what they see.…

By Angela Fritz, CNN (CNN) — Sunday was the hottest day in recorded history, according to preliminary data from a climate tracking agency…

By Jack Guy, CNN (CNN) — Sharks living off the coast of Brazil have tested positive for cocaine, according to new research, the first time that…

By Laura Paddison and Chris Liakos, CNN (CNN) — The Greek Islands, known for their idyllic towns, rugged landscapes and sun-baked beaches, are…

By Katie Hunt, CNN (CNN) — A mysterious phenomenon first observed in 2013 aboard a vessel in a remote part of the Pacific Ocean appeared so…

By Ella Nilsen, CNN (CNN) — The massive offshore wind turbine blade that broke and spread fiberglass and foam debris across Nantucket beaches…

By Ashley Strickland, CNN (CNN) — As the full moon shines in the night sky this weekend, take a moment to revel in its beauty and search for a…