Thursday, March 17, 2022

Links: Noisy Soils, First Art, Mars Geology

A few readings for your perusal.

1) Biologists are poking senors into soil to listen to the hum of life. Amazing article by Ute Eberle on what we can learn from acoustic signals given off by animals living within a soil profile.

Life in the soil was thought to be silent. What if it isn’t?

2)  When was the first '├írt' made? Is there a neat sequence from abstract scratches on rock and bone to representational art that adorns the walls of caves? Excellent article by Amy McDermott on this question, bringing together the viewpoints of archeologists and cognitive scientists. 

What was the first “art”? How would we know?

3) One year on, NASA's Mars Perseverance has been drilling into rock, collecting samples and finding some surprises along the way. It will now head towards an ancient delta to look for past life! Alexandra Witze reports on the progress.

A year on Mars: How NASA’s Perseverance hit a geological jackpot.


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