Microglia, specialized cells like the one seen in the center of this image, can restrain the accumulation of beta-amyloid protein (plaques in orange) that are a hallmark of Alzheimer's disease. But the cells sometimes contribute to the progression of the illness, researchers say.
Juan Gaertner/Science Source
A glass is filled in with water on April 27, 2014 in Paris. Scientists studying what makes us thirsty have found the body checks in on our water consumption in several different ways.
FRANCK FIFE/AFP via Getty Images
Thirsty? Here's how your brain answers that question
Dr. Chikwe Ihekweazu is the head of the World Health Organization's newly created Hub for Pandemic and Epidemic Intelligence. "We have to get better at convincing leaders to use the data we provide and not their political instinct or whatever else their decisions are based on. And that's not easy," he says.
Gas stoves emit pollution into your house and are connected to a production and supply system that leaks the powerful greenhouse gas methane during drilling, fracking, processing and transport.
Meredith Miotke for NPR
This family photo shows D.J. Ferguson initially being treated at Milford, Mass., Regional Medical Center. Brigham and Women's Hospital in Boston is defending itself after Ferguson's family claimed he was denied a new heart for refusing to be vaccinated against COVID-19.
Tracey Ferguson file photo/via AP