Heat waves are hitting the globe from north to south, with the Arctic, parts of Australia and the central United States sweating record warmth in recent days.
The Arctic is in the midst of another hot spell, with temperatures soaring far above average for the third time this winter. The heat comes after yet another record-breaking month for low levels of sea ice at the North Pole, part of a dramatic and troubling warming trend that scientists have reported over the past few months.
In Oklahoma and Texas, temperatures reached into the 90s over the weekend. Mangum, Okla. broke a daily record when the thermometer hit 99 degrees on Saturday.Last week, Oklahoma Gov. Mary Fallin issued an emergency burn ban in response to the extreme weather, but a grass fire broke out anyway in Oklahoma City, prompting authorities to ask some residents to leave their homes.
Parts of southeastern Australia are also in the midst of an extreme heat wave, with temperatures topping 115 degrees on Saturday west of Sydney. The heat has helped fuel dozens of bush fires that are forcing evacuations. Authorities have said the fire conditions are as bad as they have seen.