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Beginning around age 50, the brain’s memory center appears to lose many of its longtime immune cells and replace them with more inflammatory ones. This surprising shift may help explain how normal aging sets the stage for Alzheimer’s disease and dementia.

Astronauts Anil Menon and Jessica Meir ventured out to install a mounting hardware for the future addition of solar arrays to the space station.

Description SkyFall ground-penetrating radar engineer Maya Román connects a coaxial cable to a test antenna in the Environmental Test Lab’s electromagnetic interference testing chamber at NASA’s Jet Propulsion Laboratory in Southern California.  The antenna was pointed up during test to minimize ref...

Summary pending review.

A long-term brain study found that common risks such as smoking, high blood pressure, heart disease, and high blood lipids were strongly linked to damage associated with vascular dementia. The findings suggest that healthier lifestyle choices could help delay dementia by reducing several harmful bra...

The ocean’s ebbs and flows reveal dynamic tidal flats and a well-traveled shipping route along the coast of Germany.

Summary pending review.

A Colorado lab researching the ground-squirrels comes up with an innovative way to raise money after funding cuts.

A stray SpaceX rocket is believed to have crashed into the Moon, forming a crater