Millions of people across the United States on Monday made last minute preparations for an unusually bitter Arctic blast that could send temperatures plummeting to their coldest in 20 years.
A fierce winter storm has caused chaos in the United States since the start of the year, killing 11 people, canceling thousands of flights and bringing freezing temperatures to Canada.
The month of November was the hottest experienced on Earth since record-keeping began in 1880, the US National Oceanic and Atmospheric Administration said Tuesday.
Australia's native koala could face a wipeout from increasing temperatures unless "urgent" action is taken to plant trees for shelter as well as eucalypts to eat.
If the heat makes you cranky, take heart: you're not alone, according to a study out Thursday in the US journal Science that links rising tempers to hot temperatures.
Soaring cabin temperatures meant 50 passengers and crew had to be treated for heat stress Monday on a Qantas domestic flight in Australia, after a problem with the air-conditioning.