How dangerous is extreme heat to humans?

The media reporting around heat waves that have hammered the northern hemisphere has been unequivocal: the simultaneous record-breaking heat has "pushed the limits of human survival."

Changing climate can affect fish fertility

(Phys.org) -- Warmer water temperatures can greatly increase the reproductive capacity of the widely distributed pest fish species gambusia, or mosquito fish, a new study has found.

Greenhouse gases soar; no signs warming is slowed

(AP) -- Heat-trapping greenhouse gases in the atmosphere are building up so high, so fast, that some scientists now think the world can no longer limit global warming to the level world leaders have agreed upon as safe.

page 31 from 40