Contrast-enhanced mammography identified tumors as accurately as more expensive scans. But it is not widely used for screening in the United States.
Community groups are fighting an unusual Louisiana law that restricts how they use data from air-quality monitors, saying it violates free speech.
Though much remains uncertain, experts predicted many people will face new barriers to vaccination.
In April, astronomers said they had detected a possible signature of life on the exoplanet K2-18b. Now, three independent analyses discount the evidence.
The report echoes many of Health Secretary Robert F. Kennedy Jr.’s talking points on ultraprocessed foods and vaccines, but with some notable omissions.
Forests around the world disappeared at a rate of 18 soccer fields every minute, a global survey found. Fires accounted for nearly half of the losses.