A winter heat wave bringing historically high temperatures to Chile is a "window" to an increasingly warm future, according to scientists. Globally, July was...

A winter heat wave bringing historically high temperatures to Chile is a “window” to an increasingly warm future, according to scientists.

Globally, July was already the hottest month on record and the first days of August brought a heat wave to parts of northern and central Chile, bringing springlike weather to the capital in the dead of the Southern Hemisphere winter.