Is it coincidence a human finger fits exactly into a human nostril. If not, why does my mum tell me not to do it?
Jack Walton (aged 9), London, UK
More from Â鶹´«Ã½
Explore the latest news, articles and features
Health
Peptides are the latest wellness trend – but do they work?
Comment
Humans
Mystery hominin left big footprints at ancient lake in Africa
News
Environment
Getting a bit more gas from the North Sea doesn’t matter climate-wise
Comment
Space
We’ve found the best example yet of an enormous wandering black hole
News
Popular articles
Trending Â鶹´«Ã½ articles