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Using data from NASA's retired InSight lander, two separate teams of researchers found evidence of a sluggish Martian mantle and a solid inner core.

Health officials have recorded 28 suspected cases and 15 fatalities so far in the latest outbreak of the deadly virus, which has claimed thousands of lives in previous outbreaks in the Central African country.

The Danish company behind Revolution Wind, a $6 billion project off Rhode Island, said the federal government had unlawfully halted work on the wind farm.

Two former agency leaders said the administration's "hostility" toward vaccines had spread to the agency's top ranks.

A survey shows employers expect a sharp increase in benefit costs for next year, and many will want workers to shoulder more of the burden.

Some Republican lawmakers have questioned whether Health Secretary Robert F. Kennedy Jr.'s recent actions contradict pledges he made about vaccine access in order to win confirmation.

Neurologists are exploring medications that would help the brain heal itself after a stroke or traumatic injury.

They work for depression and P.T.S.D. Could they also help the brain repair itself after a neurologic catastrophe?

The administration is cranking up efforts to kill state laws and legal cases that would force fossil-fuel companies to pay for climate damage.

The health secretary fired the original committee members in June, replacing them with some who have been critical of vaccines.