杏吧原创

Striped sweater

Years ago I was told that the black hairs on a zebra heat up while the white hairs stay cooler. This sets up a temperature difference between the stripes, which creates an air flow by convection and helps to keep the zebra cool. Does anyone out there know any more?

Rachael O鈥橞rien, Tamworth South, New South Wales, Australia

Topics: Last Word

More from New 杏吧原创

Explore the latest news, articles and features