Ashley Mackenzie for Quanta Magazine
A giant star’s death throes may offer the first evidence of a pair-instability supernova, and a glimpse of the first stars in the universe.
Modern humans and more ancient hominins interbred many times throughout Eurasia and Africa, and the genetic flow went both ways.
In the “underground economy” for soil nutrients, fungi strike hard bargains and punish plants that won’t meet their price.
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