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By Laura Paddison, CNN (CNN) — Greece’s worst wildfire of the year has ripped through the Attica region toward the capital Athens at lightning speed, tracking a devastating course that killed a woman, torched thousands of hectares of land and forced people to flee their homes. The fire, which started Sunday near the town of

By Ashley Strickland, CNN (CNN) — German astronomer Johannes Kepler made sketches of sunspots in 1607 from his observations of the sun’s surface — and centuries later, the pioneering drawings are helping scientists solve a solar mystery. Even though everything in the solar system revolves around the sun, scientists have yet to unlock many of

By Taylor Nicioli, CNN (CNN) — For months, a gargantuan iceberg has been slowly spinning in one spot in the Southern Ocean — and it could continue to stay trapped in this vortex for quite some time, experts say. As the world’s largest iceberg, the colossus A23a is of great interest to scientists, who have closely

By Jackie Wattles, Kristin Fisher and Ross Levitt, CNN (CNN) — Two NASA astronauts who have had their mission to the International Space Station repeatedly extended due to problems with the Boeing Starliner spacecraft will need to wait at least another week before they learn how and when they are returning to Earth. At a

By Ashley Strickland, CNN (CNN) — Stonehenge’s Altar Stone, which lies at the heart of the ancient monument in southern England, was likely transported over 435 miles (700 kilometers) from what’s now northeastern Scotland nearly 5,000 years ago, according to new research. The findings of a new study, published Wednesday in the journal Nature, overturn

By Jacopo Prisco, CNN (CNN) — For six months in 1181, a dying star left a mark in the night sky. The striking object appeared as bright as Saturn in the vicinity of the constellation Cassiopeia, and historical chronicles from China and Japan recorded it as a “guest star.” Chinese astronomers used this term to

By Amy O’Kruk and Angela Dewan, CNN (CNN) — No, it’s not your imagination — summers in the US really are getting hotter. And longer. Human-caused climate change is turbocharging heat all over the country, but it’s most intense in cities, where more than 260 million Americans live. That’s because buildings, roads and sidewalks radiate

By Ashley Strickland, CNN (CNN) — Data from a retired NASA mission has revealed evidence of an underground reservoir of water deep beneath the surface of Mars, according to new research. A team of scientists estimates that there may be enough water, trapped in tiny cracks and pores of rock in the middle of the

By Taylor Nicioli, CNN (CNN) — Spiders have a reputation for giving some humans a fright, but a team of scientists has flipped the script to learn why one increasingly visible species seems to have an edge on handling stress. Jorō spiders — which have been spreading across the southeastern United States since their first appearance in

By Barbie Latza Nadeau, CNN Rome (CNN) — The skeletal remains of a man and a woman have been unearthed in Pompeii, along with a cache of coins and precious jewelry, archaeologists say. The discovery is part of a dig in Region IX of the buried city that has uncovered a plethora of ancient buildings

CNN By Amy Gunia and Alkira Reinfrank, CNN (CNN) — Some 400 kilometers (250 miles) from the nearest sea, engineering students at Switzerland’s ETH Zurich are hard at work on cutting-edge robots that may change the way the world’s oceans are studied. “Eve” the robotic fish swings its silicone tail side to side, powered by

By Amy Gunia and Alkira Reinfrank, CNN (CNN) — Some 400 kilometers (250 miles) from the nearest sea, engineering students at Switzerland’s ETH Zurich are hard at work on cutting-edge robots that may change the way the world’s oceans are studied. “Eve” the robotic fish swings its silicone tail side to side, powered by pumps

By Riane Lumer, CNN (CNN) — It’s that time of summer to watch the most anticipated meteor shower of the year: the dazzling display known as the Perseids. Streams of light and color will travel across the sky while explosions of fireballs linger, leaving behind even brighter streaks than the meteor trails from the Perseids

By Lou Robinson and Angela Dewan, CNN (CNN) — The Paris Olympics opened with rain on its parade, then blistering heat and, finally, a week of pleasant sunshine. As it comes to a close on Sunday, temperatures are expected to again soar up to 95 degrees Fahrenheit, or 35 degrees Celsius. The only certainty about

By Alaa Elassar, CNN South Island, New Zealand (CNN) — Justin Parkin-Rae takes a break from pulling chunks of weeds from around one of the many rivers that snake through Kaikōura, a quaint fishing town on the east coast of New Zealand’s South Island, named Te Waipounamu in his native Māori language. His jade necklace and red hair

By Ashley Strickland, CNN (CNN) — The human story became a bit more complicated about two decades ago. In 2003, archaeologists excavating inside Liang Bua, a cave on the Indonesian island of Flores, found a tiny humanlike skull. More bones followed, and at first, archaeologist Thomas Sutikna and his team thought they had uncovered the

By Ashley Strickland, CNN (CNN) — Excavations and metal-detecting work at the site of a famous ship burial in Suffolk, England, have revealed missing pieces that could help archaeologists better understand an intriguing but incomplete sixth century artifact. A team of archaeologists, volunteers and conservators unearthed additional fragments of a Byzantine bucket at Sutton Hoo,

By Ashley Strickland, CNN (CNN) — One of China’s Long March 6A rockets has broken apart in low-Earth orbit and created a debris cloud consisting of hundreds of pieces, according to multiple space debris-tracking entities. The rocket launched from the Taiyuan Satellite Launch Center on Tuesday to deliver 18 G60 satellites into orbit, which marks

By Jackie Wattles, CNN (CNN) — When astronauts Suni Williams and Butch Wilmore left Earth for International Space Station nearly three months ago, they ditched their bags for a key piece of equipment. Helming the inaugural crewed flight test of Boeing’s Starliner spacecraft, they departed without their own toiletries and other personal comforts — expecting

By Kara Fox, CNN (CNN) — A coating 100 times thinner than a human hair could be “ink-jetted” onto your backpack, cell phone or car roof to harness the sun’s energy, new research shows, in a development that could reduce the world’s need for solar farms that take up huge swaths of land. Scientists from