Is COVID-19 Herd Immunity Even Possible Anymore?
Between variants and vaccine hesitancy, the U.S. may be a long way from vaccinating our way out of the pandemic.
A computer program, Dr. Fill, beat the human competition in the 2021 American Crossword Puzzle Tournament in just 49 seconds.
California wildfire researcher Craig Clements explains how landscape and moisture content in plants can give early clues to how smoky a summer might be.
Fires in the far north may impact forests’ ability to store carbon.
Crop scientists are tackling fertilizer runoff with woodchips, bacteria, and a trench.