2018, in trending philosophical topics.

Our ancient-hominid relatives seem to have had surprisingly sophisticated health care.

It showed where America is, and where it’s going.

Cells that control an animal’s spatial awareness can reorient themselves to favor locations that are full of food.

Conservationists want to protect an elusive animal’s habitat. Snowmobilers want to preserve a cherished pastime.

The upsides and downsides of sterilizing ourselves

We know enough to acknowledge that the scenario is possible, and we should therefore act as though it’s true.

An extremely common microbe can stop the insects from spreading the virus that causes dengue fever.

One day, cocoa might come from a petri dish.