Sweater that mimics polar bear fur may keep you warm in extreme cold

News Snapshot:

Polar bear fur keeps the animals warm in Arctic temperatures Thorsten Milse/robertharding/Alamy A fibre that is said to mimic polar bear fur may one day feature in the next generation of space suits, military uniforms and clothing for extreme cold environments. Under the direction of its creators at Zhejiang University, China, the artificial fibre has already been made into a sweater that is claimed to be as warm as down feather, which is among the best-known natural insulators, but is only a fraction of its thickness. Writing in a paper, the team makes claims about the sweater’s strength and stretchability,...