A trio of mRNA molecules could help guard against the harmful effects of aging on immune cells, a study in mice finds.

Vikki Velasquez is a researcher and writer who has managed, coordinated, and directed various community and nonprofit organizations. She has conducted in-depth research on social and economic issues ...

This weekend will offer a chance to see a rare celestial event—Mercury, Venus, Jupiter, Saturn, Uranus and Neptune all aligned in the sky like beads on a string ...

The visual system is the part of the central nervous system that is required for visual perception – receiving, processing and interpreting visual information to build a representation of the visual ...

The lymphatic system is a network of lymphoid organs and lymphatic vessels. It transports lymph fluid and helps to clear toxins and other waste from the body’s tissues. Lymphocytes use the lymphatic ...

Feb. 16, 2026 A parasite that may already be hiding in your brain has a shocking survival trick: it can infect the very immune cells sent to destroy it. Yet most people never get sick, and new ...

Do you have a question about history? Send us your question at history@time .com and you might find your answer in a future edition of Now You Know. All sports have their own vocabularies, the ...

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The Federal Government is composed of three distinct branches: legislative, executive, and judicial, whose powers are vested by the U.S. Constitution in the Congress, the President, and the Federal ...