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Health officials argue the protection of the COVID vaccine booster wanes over time and say some people need a second booster. But other infectious disease experts say three shots are enough for now.

As Israel's ground offensive in Gaza City escalates, Shaina Low of the Norwegian Refugee Council warns civilians are trapped, forced to choose between staying under bombardment or fleeing south.

Scientists created the eggs using DNA from adult skin cells, a step that could someday potentially lead to new ways to treat infertility and enable gay couples to have genetically related children.

Rats aren't just a nuisance. They can carry diseases and are a leading causes of property damage. One community in Massachusetts is trying a novel approach to rat reduction: Birth control.

The plane crashed and burst into flames on Tuesday in Louisville, killing at least 12 people and injuring nearly 20 others. The disaster also shut down the largest UPS package distribution hub.

The CDC's Advisory Committee on Immunization Practices voted on the flu vaccine, raising concerns about a rarely used preservative. Medical groups worry this will "sow distrust" in vaccines.

Signs installed earlier in National Parks earlier in June asked for feedback on signs "that are negative about past or living Americans." Comments viewed by NPR didn't provide the requested feedback.

An unknown number of fired CDC workers got their jobs back this week. Among them was Bri McNulty, who had shared her story with NPR.

Scientists have found a way to sample DNA out of the air on a large scale — making it possible to one day track the health and well being of all kinds of species around the world.

The Black Gospel Archive at Baylor University is the world's largest digital collection of gospel music. Now, it wants to collect oral histories around its rare recordings.