Microplastics might clog up immune cells, preventing them from fighting infections and clearing away dead cells, as well as reducing sperm counts.

Miniature organs grown in the lab can organize themselves into complex shapes, which enables scientists to use them to study disease. The trouble is they never do it the same way twice, which has made ...

Are we all material—tissues and veins—or is there some nonmaterial substance, some essence, that transcends the corporeal ...