Earth’s oldest rocks may be at least 4.16 billion years old
Jun 26, 2025 · Earth’s oldest rocks may be at least 4.16 billion years old An unconventional dating method aims to settle a dispute over the age of some Canadian rocks
An ancient Earth impact could help in the search for Martian life
Jul 9, 2025 · Strange cone-shaped rocks led scientists to the hidden remains of one of Earth’s oldest asteroid impacts. It could help us find fossil life on Mars.
Early Earth's belly held onto its water - Science News
Dec 11, 2025 · When the early Earth’s magma ocean crystallized 4.4 billion years ago, the deep mantle trapped an ocean’s worth of water, scientists say.
Earth’s ancient ‘greenhouse’ conditions were hotter than thought
Sep 19, 2024 · A timeline of 485 million years of Earth’s surface temperatures shows ancient greenhouse conditions were hotter than scientists thought.
Meteorites suggest ancient Earth once had an atmosphere rich in CO2 ...
Jan 29, 2020 · Tiny meteorites suggest ancient Earth had a carbon dioxide–rich atmosphere High levels of CO 2 could have produced observed chemical alterations in cosmic dust
Roughly 90 million years ago, a rainforest grew in Antarctica | Science ...
Apr 1, 2020 · A forest flourished within 1,000 kilometers of the South Pole, probably because of high atmospheric carbon dioxide levels and an ice-free Antarctica.
Ancient rocks reveal when rivers began pouring nutrients into the sea
Jan 31, 2025 · Rivers began pumping weathered material into the sea about a billion years after Earth formed, suggesting continents may have gotten an early start.
This Greek philosopher had the right idea, just too few elements
Apr 3, 2019 · The ancient Greek philosopher Empedocles wrongly believed matter to consist of just four elements, but he grasped the basic idea of forces governing unchanging matter.
Before altering the air, microbes oxygenated large swaths of the sea
May 7, 2025 · Ancient oxygen-making microbes may have oxygenated large swaths of Earth’s seafloor hundreds of millions of years before the element filled the atmosphere.
NASA's Perseverance finds its first possible hint of ancient Mars life
Jul 25, 2024 · The NASA Mars rover examined a rock containing organic compounds and “leopard spots” that, on Earth, are associated with microbial life.