A study in Uganda shows how often chimps use medicinal plants and other forms of health care — and what that says about the roots of human medicine.

Shape and symmetry help determine where a leaf lands — and if the tree it came from can recoup the leaf’s carbon as it decomposes.

In 2018, over 350,000 excess heart disease deaths were linked to phthalates. More research is needed to fully understand the chemicals' effects.

It's not quite as bad as The Last of Us. But progress has been achingly slow in developing new antifungal vaccines and drugs.