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Knowing where rates of prevalence are highest — and lowest — can lead to new strategies for treatment and prevention. The map focuses on sub-Saharan Africa, the epicenter of the epidemic.

We also discuss the phenomenon of symptom-free cases — how many are there, do we know how much of a role they play in spreading the virus?

The nonprofit Allen Institute in Seattle has produced a visualization of human cell division that promises to be useful for professional scientists and curious amateurs alike.

College enrollment continues to decline, according to data released Monday. Small colleges have been forced to close; others are getting creative when it comes to finding and keeping students.

Photographer Tyrone Turner documented the life and changes on Cat Island in the southeastern coastal area of the state before it disappeared.

A new study predicts how far north these insects could live if climate change goes unchecked.

A young scientist decided that one way to get girls into science would be by painting neurons and parasitic worms on her nails.

Homeowners are rebuilding after wildfires, but many won't be required by governments to use fire-resistant materials. Without such improvements, communities face harm again with the next fire.

Will AI in health care create a two-tiered system in which poorer people will be seen by a computer instead of a doctor? That's one concern about the burgeoning technology.

One of the nation's most remote places is now awash in oil money. We sent a photographer to North Dakota to capture not just what it looks like but how it feels.