On this week's SciencePodcast🎙️ with boron110, jack_tamisiea, and Susan Brantley: ▶️ A diet shift for a group of Alaskan wolves ▶️ Chemical weathering in a warming world 🎧 Listen here:
This is the Science Podcast for January 27th, 2023. I'm Sarah Crespi. First up this week, wolves have been shown to turn to otters as their main meal when they no longer have deer to eat. I talk with freelance Science writer Jack Tamisiea and researcher Gretchen Roffler about this unexpected behavior. Next up, how rocks turning to soil over geological time takes carbon out of the air.
Well, it's a long story, but when it's in a pore fluid in soils, it then can percolate downward. It can get in groundwater. The groundwater can flow into the rivers. The rivers can flow to the oceans. And if you think about it over the very long time scales that I think about it, the geology world view, over millions of years, those bicarbonate and carbonate ions, which originally were CO2 in the atmosphere, are precipitated at the sea floor as limestone. And then that is buried.
It's interesting that when we looked at it and put it together and put together the global picture of the thermostat, we realized that really half the planet is so dry that the weathering from that part of the planet is almost immaterial. And then there's a big part of the planet that's shielded by these soils.
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