The researchers intend for the tool to eventually help doctors make treatment decisions.

In Niger, fewer kids die when health workers administer azithromycin routinely, perhaps because of a shift in the composition of gut microbes.

About 70 gray whales have been found dead this year on the west coast of the US.

Those with two copies of the Δ32 allele in the CCR5 gene are 21 percent more likely to die by age 76, although it’s not clear why.

Biologists recover the bodies of puffins from a mass mortality event.

A comparison of thousands of former athletes in the two sports finds that NFL players were more likely than MLB players to die from cardiovascular and neurodegenerative diseases, in particular.

Black women and Native American women die roughly three times more often than white women, and 60 percent of all maternal deaths may be preventable.

A demographer’s model suggests the “mortality plateau” in the extreme elderly could be explained by clerical errors. Not everyone agrees.

Scientists argue that current medical advances cannot crack Homo sapiens’s natural age limit.