Choosing an air conditioner can be tricky; fortunately, consumer reviews exist. Based on feedback from customers, one can see which AC brands they should avoid.

Earth's air conditioner is on the blink, and a University of Miami researcher, using a "toolbox" of state-of-the-art ...

A polar vortex is bringing arctic air into the country next week. Forecast maps show when freezing temperatures will sweep ...

The Batagaika crater in eastern Siberia, half a mile wide and growing, is the largest of many across the Arctic. As permafrost ... and it leaves behind tunnels and air pockets.