Splitting Chinook salmon into two groups based on their DNA could aid conservation efforts. But some researchers argue that this would be a misuse of the data.
As fires blanket growing swathes of the West, scientists are beginning to understand more about how their smoke affects the transmission and severity of COVID-19 and other illnesses, and how it differs from that of other types of air pollution.
Revolutionary new methods for extracting, purifying, and sequencing ever-more-ancient DNA have opened an unprecedented window into the history of life on Earth.