Press Play with Madeleine Brand
What you need to know about the polar vortex and global warming
Arctic temperatures are hitting the midwest, while Australia experiences a heat wave. Heat records were broken all over last year, from Hong Kong to Norway to Southern California.
Arctic temperatures are hitting the midwest, while Australia experiences a heat wave. Heat records were broken all over last year, from Hong Kong to Norway to Southern California. Scientists say many extreme cold weather events could also be the result of global warming.