The top public health officials during Trump's first term praised mRNA vaccines. In the second term, officials seem to be retreating from them.

The man who attacked the CDC headquarters in Atlanta on Friday fired more than 180 shots into the campus and broke about 150 windows, with bullets piercing "blast-resistant" windows and spattering ...

Nicotine-free vape liquids caused skull changes in mice fetuses. Effects appeared with "safer" chemical ratios used in modern ...