Iron and ice: Earth’s passage through the interstellar cloud
Iron-60 is a radioactive isotope of iron that's found in Antarctic ice and in deep-sea crusts.
It's only source is nucleosynthesis in the cataclysmic explosive...
Scientists discover a hidden ocean process speeding up Antarctic ice melt
Scientists have long warned that melting ice in Antarctica could raise global sea levels and threaten coastal cities around the world.
But a new study...
Humans were using horses thousands of years earlier than thought
Horses have shaped human history in powerful ways, from ancient travel and trade to warfare and exploration.
Now, new research suggests that humans started using...
GDP surpasses national debt – is that a problem
Gross Domestic Product totaled $31.22 trillion between April 2025 and March 2026 and public debt totaled $31.27 trillion.
At first glance, the news that the...
After an opaque summit, China and the US want to work together again. That...
Back in 2005, US economist Fred Bergsten coined the term “Group of 2” or “G2”, proposing a stronger partnership between what are now the...
Neanderthals may have performed dental surgery 60,000 years ago
A surprising new discovery suggests that Neanderthals may have carried out a form of dental treatment nearly 60,000 years ago.
Researchers studying an ancient tooth...
Why carbon dioxide cools the upper atmosphere while heating Earth below
Scientists have long known something strange is happening in Earth’s atmosphere. While greenhouse gases are warming the planet’s surface and lower atmosphere, the upper...
Stardust trapped in Antarctic ice reveals tens of thousands of years of solar system’s...
When you think of outer space, you're likely picturing stars, planets and moons. But much of space is filled with clouds of gas, plasma...
Earth’s first continents formed billions of years earlier than expected
Scientists studying some of the oldest rocks on Earth have uncovered new evidence that the planet’s first continents may have started forming through plate...
What it would have been like to experience the dinosaur‑killing asteroid Armageddon
A great Tyrannosaurus rex strides through the conifer trees of her territory, sniffing the air.
She picks up the scent from the carcass of a...