US sizzles in rare autumn heat wave

A freakish heat wave is making early autumn feel like the dog days of summer in much of the southern and eastern United States, with forecasters predicting that temperatures Wednesday could get close to triple digits.

How does climate change help to spread diseases?

Many vector-borne diseases are transmitted by mosquitoes. Mosquitoes are cold-blooded insects, which means that environmental conditions, in particular temperatures, regulate their metabolism, development and activity. For ...