Why do tigers have stripes? The other big cats tend to have spots.
Linda Veron, Tarragona, Spain
More from Â鶹´«Ã½
Explore the latest news, articles and features
Space
One of NASA’s crucial links to deep space is at risk of burning down
News
Life
Clothes made from living fungi can clean and repair themselves
News
Environment
Earth is heating up faster than at any time in its history
Comment
Health
Having a young biological age could help with weight loss
News
Popular articles
Trending Â鶹´«Ã½ articles