When you're studying a wind-scoured, snow-covered patch of far south Antarctica, you may be the first person ever to set foot there.

Colder air will be pulled into much of the country later next week.

The jet stream will dip southward, opening the door for arctic air.

The warmest temperatures compared to average will likely be in parts of the West.

In a warming world, water is creeping closer and closer to some residents' front doors.