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news Biology Evidence status: Peer reviewed; modelling study (projections)

Severe drought raises projected habitat loss for most cacti, study finds

Models of 993 cactus species that add severe drought project 25–35% losing over 80% of suitable climate by 2100. What the Nature study shows, and its limits.

What it does not show Losing suitable climate is not the same as going extinct; water storage, life stages and real dispersal were not modelled

By Murad Ali Khan 12 min read
Close-up of dark grey and white swirled banding in a polished metamorphic stone

news Earth Evidence status: Peer reviewed; measurements of rock samples plus modelling; subduction is an interpretation

3.95-billion-year-old rock from China hints at very early subduction

Zircons in a 3.95-billion-year-old gneiss from Hebei, China, hint at a mantle depleted in the Hadean and seafloor buried over 50 km deep, perhaps…

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  2. 02
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  3. 03
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