A Giant Interstellar Cloud May Have Once Enveloped Earth, Potentially Causing Ice Ages
Astronomers suggest this cold, dense cloud compressed our sun's protective field between two and three million years ago, leaving the Earth exposed to cosmic material
Endangered Wild Horses Return to Kazakhstan for the First Time in at Least 200 Years
The international effort, led by the Prague Zoo, released seven Przewalski’s horses to their native steppe habitat in central Asia
Astronomers Discover Water Frost on Mars' Tallest Volcanoes
On early winter mornings, a thin layer of ice forms in craters atop the Red Planet's towering peaks, near its equator, according to a new study
William Anders, NASA Astronaut Who Captured Iconic 'Earthrise' Photograph, Dies at 90
The Apollo 8 lunar module pilot also served in the U.S. Air Force and worked extensively on nuclear energy projects
When Did Humans Domesticate Horses? Scientists Find Modern Lineage Has Origins 4,200 Years Ago
A new study suggests people in the Eurasian steppe bred horses around 2200 B.C.E., challenging earlier ideas about the beginnings of horse husbandry
Archaeologists Discover Clues to Ancient Migration Route That Brought Humans to Australia
New research offers evidence that humans did not inhabit the island of Timor until around 44,000 years ago, suggesting it was not part of the original migration route from Southeast Asia to Australia
130-Foot Snake Carving Slithers Through 2,000-Year-Old Rock Art Found in South America
The conspicuous reptile renderings spotted along the Orinoco River likely functioned as territorial markers, akin to pre-Colombian road signs
Hawaii's Kilauea, One of the World's Most Active Volcanoes, Erupts Again
The short-lived eruption occurred in an area of the volcano that had not erupted since December 1974
Missed the 'Parade of Planets'? These Upcoming Alignments Will Likely Be Better, Anyway
Astronomers tempered expectations of the celestial event this week, pointing to others in the near future as more exciting opportunities for sky watchers
Bizarre Sex Helped Anglerfish Diversify and Dominate the Deep Sea, Study Suggests
Some of these fish perform obligate parasitism, in which males attach to—and then fuse bodies with—the much-larger females
Climate Change Is Making Airplane Turbulence More Common and Severe, Scientists Say
Following turbulence on a flight last week that led to one death and dozens of injuries, researchers, flight attendants and transportation officials alike are warning about links between warmer air and turbulence
Crows Can 'Count' Up to Four Like Human Toddlers, Study Suggests
Three carrion crows engaged in a simplified version of counting when prompted, and the birds showed signs of planning out their responses
Robot Sets New Rubik's Cube Speed Record, Completing the Puzzle in 0.305 Seconds
A team of Mitsubishi engineers harnessed high-speed motors and an A.I. algorithm to eclipse the previous record, set six years ago
New Device Delivers Electric Pulses to Help Patients Regain Movement After Spinal Cord Injuries
Alongside physical therapy, the electric stimulation helped patients with tetraplegia improve mobility in their arms and hands in a small trial
Alaska's Rivers Are Turning Orange as Thawing Permafrost Releases Metals Into Waterways
A new study identifies at least 75 Arctic streams where minerals, especially iron, are staining water with a rusty hue
See Five Dazzling New Images of the Cosmos, Captured by Europe's Space Telescope
With its visible and infrared photography, Euclid—known as the "dark universe detective"—is helping astronomers better understand dark matter and dark energy
Did Hannibal's Army Burn Down This Ancient Mountain Settlement?
In a scorched village in Spain, archaeologists discovered a hidden gold earring that suggests residents foresaw a coming attack around the time of the Second Punic War
How Spider Silk Could Inspire Microphones of the Future and Revolutionize Sound Design
Spiderwebs can pick up vibrations in air flow caused by sound waves, and researchers say microphones designed this way could become more sensitive and compact
Watch a Blue-Green Comet Illuminate Skies Over Spain and Portugal
The colorful fireball mesmerized onlookers—and its unexpected appearance surprised astronomers who are hoping to better predict when space rocks enter Earth's atmosphere
Why Do Humans Sing? Traditional Music in 55 Languages Reveals Patterns and Telling Similarities
In a global study, scientists recorded themselves singing and playing music from their own cultures to examine the evolution of song
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