Where did the galaxy get its carbon?
Researchers compared computer models with observations of stars in the Milky Way, and found that massive stars are the dominant source of…
Category: What happened in Earth’s past?
What was the Earth like a long time ago? What have archaeologists found? What was it like before life started? How did life come to be?
Is nuclear waste safe underground?
Researchers calculated that nuclear waste could be safely sealed away for more than 350 million years in geological repositories deep…
Bedrock fractures shape waterfalls
Scientists replicated river systems in a laboratory and found that erosion around waterfalls varies based on pre-existing fractures in the…
Why is Earth’s crust layered?
Researchers found that the enrichment of radiogenic elements in the upper continental crust requires high-temperature metamorphism to melt…
Is modern farming sustainable?
Scientists studied sediments from the Mississippi River catchment to determine whether modern agriculture caused more landscape erosion than…
Are horseshoe crabs truly “living fossils”?
Scientists discovered a 445-million-year-old horseshoe crab fossil showing that these animals have maintained the same reproductive system…
The long-term fate of Earth’s biosphere
Scientists modeled how Earth’s temperature and atmosphere will change over billions of years and predicted that plants and the life they…
What colors were prehistoric mammals?
Paleontologists used fossilized pigment cells to reconstruct the fur colors of Mesozoic mammals, shedding light on their nocturnal…
The Sun’s twin star may have tilted the planets’ orbits
A scientist simulated the early solar system to determine how interactions between the Sun and other stars affected its planetary orbits.
How many asteroids can we detect before they hit Earth?
Scientists simulated a telescope with the same specifications as the new Vera Rubin Observatory. They predicted it could detect 1 to 2…