Scientists at the University of Toronto and Florida State University have found that behaviors affected by methylphenidate hydrochloride – the active ingredient in stimulants such as Ritalin and Concerta used to treat ADHD – can be passed along to several generations of descendants.

The new White House science adviser wants to have a vaccine ready to fight the next pandemic within about 100 days after a potential viral outbreak is recognized.

A 41-year-old Chinese man has been confirmed as the first human case of infection with a rare bird flu strain.

Seven U.S. boys, aged 14 to 19, received Pfizer shots in April or May and developed chest pain within a few days. Heart imaging tests showed a type of heart muscle inflammation called myocarditis.