Researchers painted black cows with white stripes to test whether zebra markings deter biting flies — and the painted cows drew 50 percent less flies, adding weight to the theory that zebras evolved their colouring not for camouflage or heat, but as an organic insect repellent

A simple coat of white paint may solve one of nature's longest-standing mysteries about why zebras really evolved their famous stripes. The post Researchers painted black cows with white stripes to test whether zebra markings deter biting flies — and the painted cows drew 50 percent less flies, adding weight to the theory that zebras evolved their colouring not for camouflage or heat, but as an…