biology

A Brain Chemical Helps Neurons Know When to Start a Movement

A Brain Chemical Helps Neurons Know When to Start a Movement

By washing through the brain, neuromodulators “allow you to govern the excitability of a large region of the brain more or less in the same way or at the same time,” said Eve Marder, a neuroscientist at Brandeis University widely recognized for her pioneering studies on neuromodulators in the late 1980s. “You’re basically creating either …

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The Queen Conch's Gambit

The Queen Conch’s Gambit

Archaeologists don’t know exactly how many Taíno survived the enslavement, massacres, and diseases that marked the following centuries—though genetic sampling reveals significant Indigenous ancestry in contemporary Puerto Rico. But Taíno stories and artifacts stress the importance of conchs: in their fishing and diving traditions; in the infinite piles of conch they harvested, ate, and honed …

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