Jon Hamilton Jon Hamilton is a correspondent for NPR's Science Desk.
Jon Hamilton 2010
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Jon Hamilton

A study in mice suggests that our brains tell us when to start and stop drinking long before our bodies are fully hydrated. Guido Mieth/Getty Images hide caption

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Guido Mieth/Getty Images

Still Thirsty? It's Up To Your Brain, Not Your Body

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This light micrograph of a part of a brain affected by Alzheimer's disease shows an accumulation of darkened plaques, which have molecules called amyloid-beta at their core. Once dismissed as all bad, amyloid-beta might actually be a useful part of the immune system, some scientists now suspect — until the brain starts making too much. Martin M. Rotker/Science Source hide caption

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Martin M. Rotker/Science Source

Scientists Explore Ties Between Alzheimer's And Brain's Ancient Immune System

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Brain MRI BSIP/Collection Mix: Sub/Getty Images hide caption

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BSIP/Collection Mix: Sub/Getty Images

A Tiny Pulse Of Electricity Can Help The Brain Form Lasting Memories

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Maria Fabrizio for NPR

Her Seizures Looked Like Epilepsy, But Her Brain Looked Fine

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Scientists zeroed in on specific neurons in the brains of mice to gain insights into how anxiety is triggered and suppressed. SPL/Science Source hide caption

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SPL/Science Source

Researchers Discover 'Anxiety Cells' In The Brain

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(Left to right) Donald Trump, Abraham Lincoln and then vice presidential-candidate Richard Nixon (Left to right) Drew Angerer/Getty Images; National Archive/Getty Images; Keystone/Getty Images hide caption

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(Left to right) Drew Angerer/Getty Images; National Archive/Getty Images; Keystone/Getty Images

Why Mental Health Is A Poor Measure Of A President

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As people age they may forget more because their brain waves get out of sync, new research finds. PhotoAlto/Frederic Cirou/Getty Images hide caption

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PhotoAlto/Frederic Cirou/Getty Images

Older Adults' Forgetfulness Tied To Faulty Brain Rhythms In Sleep

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How Scientists Are Growing Mini Brains In Petri Dishes For Experiments

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I guess it's too late to change my mind. Aşkın Dursun KAMBEROĞLU/Getty Images hide caption

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Aşkın Dursun KAMBEROĞLU/Getty Images

Why Your Brain Has Trouble Bailing Out Of A Bad Plan

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New Drugs Could Prevent Migraine Headaches For Some People

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Encore: Blue Light And Sleep

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If you're regularly checking your phone at night in a dark room, you're probably tricking your body into thinking it's still daytime. Artur Debat/Moment Editorial/Getty Images hide caption

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Apps Can Cut Blue Light From Devices, But Do They Help You Sleep?

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Brain Scientists Look Beyond Opioids To Conquer Pain

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In D.C., Brain Science Meets Behavioral Science To Shed Light On Mental Disorders

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