Nobel Prize Awarded for Discoveries on How Cells Adapt to Oxygen
The 2019 Nobel Prize in Physiology or Medicine honored William Kaelin Jr., Peter Ratcliffe and Gregg Semenza for their work on elucidating how cells adjust to low oxygen levels.
To Pay Attention, the Brain Uses Filters, Not a Spotlight
A brain circuit that suppresses distracting sensory information holds important clues about attention and other cognitive processes.
Origin-of-Life Study Points to Chemical Chimeras, Not RNA
Origin-of-life researchers have usually studied the potential of pure starting materials, but messy mixtures of chemicals may kick-start life more effectively.
Fossil DNA Reveals New Twists in Modern Human Origins
Modern humans and more ancient hominins interbred many times throughout Eurasia and Africa, and the genetic flow went both ways.
In Brain’s Electrical Ripples, Markers for Memories Appear
Researchers found that elongating certain brain signals in rats improved their memory. The work revealed a new property to look out for in the hunt for “biomarkers” of learning.
Scientists Debate the Origin of Cell Types in the First Animals
Theories about how animals became multicellular are shifting as researchers find greater complexity in our single-celled ancestors.