Our planet’s history includes episodes of cold so extreme that glaciers reached sea level in equatorial regions. Source: https://earthsky.org/earth/whats-coldest-earth-has-ever-been…
Tag: weathering
New evidence for multiple ice ages on Mars
Earth has had at least 5 major ice ages. Now it appears Mars – the next planet outward from the sun – has undergone anywhere from half a dozen to 20 ice ages in the past several hundred million years. Source: https://earthsky.org/space/new-evidence-for-multiple-ice-ages-on-mars…
What’s the birthstone for December?
If you were born December, you’ve got 2 birthstones, turquoise and zircon. Source: https://earthsky.org/human-world/december-birthstone-zircon-turquoise…
Hubble telescope reveals asteroid Psyche’s rusty surface
Scientists already had Psyche classified as a metallic asteroid, but new observations with the Hubble telescope reveal its rusty surface and provide scientists with a unique view into what Earth-like planets are like during their formation. Source: https://earthsky.org/space/hubble-asteroid-psyche-iron-nickel-rust-protoplanet…
Impact craters reveal details of Titan’s dynamic surface weathering
Scientists have used data from NASA’s Cassini mission to delve into the impact craters on the surface of Titan, revealing more detail than ever before about how the craters evolve and how weather drives changes on the surface of Saturn’s mammoth moon. Source: https://phys.org/news/2020-10-impact-craters-reveal-titan-dynamic.html…
The Arctic hasn’t been this warm for 3 million years
The last time CO2 concentrations reached today’s level was 3 million years ago, during the Pliocene Epoch. Hear from geoscientists who see evolving conditions in the Arctic as an indicator of how climate change could transform the planet. Source: https://earthsky.org/earth/arctic-warmest-3-million-years…
The World’s First Carbon Dioxide Removal Law Database
Today, researchers at Columbia University launched the world’s first database of carbon dioxide removal laws, providing an annotated bibliography of legal materials related to carbon dioxide removal and carbon sequestration and use. It is publicly available at cdrlaw.org. Phys.Org reports: The site has 530 resources on legal issues related to carbon dioxide removal, including such techniques as: direct air capture; enhanced…