#ThatsWild: It may be winter in the northern hemisphere, but Australian wildlife are in the heat of summer. And with average temperatures climbing across the globe, researchers have been looking closer at how species survive extreme heat. Echidnas are particularly good at it, according to a new study. These prehistoric, egg-laying mammals survive temperatures topping 100 degrees Fahrenheit by blowing mucus bubbles from their noses — which draws heat from their sinuses and cools their blood. Who knew snot could save lives? 😪 Video: © Dr Christine Cooper