Harvard scientists studying the mystery of water and life on ancient Mars believe they may have finally found a solution.

"It's been such a puzzle that there was liquid water on Mars, because Mars is further from the sun, and also, the sun was fainter early on." ...

A perfectly preserved ancient tree fossil offered scientists an unprecedented view into a moment 42,000 years ago when the Earth’s magnetic field went haywire. The compelling 2021 study tells the ...

"Ancient Earth was nothing like our current home," explains Shungo Koyama from Tohoku University, "It was a much more hostile place; rich in metallic iron with an atmosphere containing hydrogen ...

We are researching how the cells of leaves on ginkgo trees have changed over time and how we can use this knowledge to learn about the ancient atmosphere of the Earth. Fossil Atmospheres is a National ...

A team of scientists from Tohoku University is working to answer that question by exploring how organic matter might have formed in Mars' ancient atmosphere. Organic matter typically comes from ...

A computer simulation finds that an atmosphere made up of from 6% to more than 70% carbon dioxide could have produced the effect seen in the samples. "The amount of oxidation in the ancient ...

This means they are likely to have made up most of the early atmosphere, along with other volcanic gases. Chemical composition of ancient rocks Iron sulfide can only exist in rocks that were ...

Existing explanations about how and when levels of gases changed in the ancient atmosphere are challenged by: Mendeleev left gaps where he predicted that elements, not discovered at the time ...

New work offers insight into how early life adapted from a low-oxygen atmosphere to the one that exists today.

We will use this novel mechanism to quantify climatic and atmospheric change through the Anthropocene and Earth’s ancient past. Demonstrate the utility of fossil micrometeorites as a climate proxy for ...

Researchers have discovered two sets of ancient wave ripples on Mars ... indicating that the Martian atmosphere and climate must have been warm and dense enough to support liquid water open ...