Did ancient Mars flow with liquid carbon dioxide instead of water?
Mars is known for its dry riverbeds and lake basins, which suggest that liquid once flowed on its surface.
For years, scientists have believed that...
Are Neanderthals and humans separate species? New study sparks debate
A new study by researchers from London’s Natural History Museum and KU Leuven in Belgium argues that Neanderthals and modern humans (Homo sapiens) should...
Mammoths were a major food source for ancient Americans, study finds
Scientists have found the first direct evidence that ancient Americans relied heavily on mammoths and other large animals for food.
This discovery sheds light on...
Cool water from the deep could protect pockets of the Great Barrier Reef into...
For coral reefs, climate change is an existential threat. Australia's Great Barrier Reef has endured seven mass bleaching events over the past 25 years.
Five...
Antarctica has gotten 10 times greener in 35 years
Our satellites are dispassionate observers of Earth’s climate change.
From their vantage point they watch as pack ice slowly loses its hold on polar oceans,...
What’s inside Uranus and Neptune? A new way to find out
In our search for exoplanets, we’ve found that many of them fall into certain types or categories, such as Hot Jupiters, Super-Earths, and Ice...
Minerals in hot springs performed a key chemical reaction for early life on Earth
One of the biggest scientific mysteries is where life on Earth started.
Research has often focused on the role of deep-sea hydrothermal vents—those towering structures...
Dinosaur-era bird fossil reveals clues to modern avian intelligence
A groundbreaking discovery is shedding light on how modern birds developed their unique brains and intelligence.
Researchers have found an exceptionally well-preserved fossil of a...
The early Earth wasn’t completely terrible
Earth formed 4.54 billion years ago. The first period of the history of the Earth was known as the Hadean Period which lasted from...
Early North Americans made clothing with bone needles, study reveals
Archaeologists have uncovered fascinating new evidence about how early humans in North America survived cold climates nearly 13,000 years ago.
At a site in Wyoming,...