We've known from the beginning how the end will arrive. Eventually, the coronavirus will be unable to find enough susceptible hosts to survive, fading out wherever it briefly emerges.To achieve so-called herd immunity -- the point at which the virus can no longer spread because there are not enough vulnerable humans -- scientists have suggested that perhaps 70% of a given population must be...
The melting of Greenland's ice cap has gone so far that it is now irreversible, with snowfall no longer able to compensate for the loss of ice even if global warming were to end today, according to...
As sea levels rise, so will groundwater. A new study shows where rising groundwater could lead to flooding and damage in...
Death Valley brings the heat, but there are other hot spots on this sweltering...
Researchers say they have found a way to resist the spread of a disease threatening...