Paleontology

Does the Measured Abundance Suggest a Biological Origin for the Ancient Alkanes Preserved in a Martian Mudstone?

Does the Measured Abundance Suggest a Biological Origin for the Ancient Alkanes Preserved in a Martian Mudstone?

Does the Measured Abundance Suggest a Biological Origin for the Ancient Alkanes Preserved in a Martian Mudstone?
Alexander A. Pavlov, Caroline Freissinet, Daniel P. Glavin, Christopher H. House, Jennifer C. Stern, Amy C. McAdam, Anais Roussel, Jason P. Dworkin, Luoth Chou, Andrew Steele, Paul R. Mahaffy, Denise Buckner, Felipe Gomez
Astrobiology, vol 26, no. 2, February, 2026

GOBE - Definition Concept Duration

GOBE - Definition Concept Duration

I read yet another paper about the Ordovician period:

The Great Ordovician Biodiversity Event (GOBE): definition, concept and duration by Thomas Servais and David A.T. Harper, Lethaia, vol 51, pp 151-164

There is a PDF of it.

Impact Induced Snowball Earth

Impact Induced Snowball Earth

Interesting paper:

Impact-induced initiation of a Snowball Earth: A model study
Minmin Fu, Dorian S. Abbot, Christian Koeberl, Alexey Fedorov
Science Advances, 10 eadk5489 (2024) 9 February 2024