White Spots on council slabs along Cromwell Road
So what causes the streets of London to be covered in these white spots? Does anyone know? These were near Cromwell Road outside the Natural History Museum.
George tells me it is actually just chewing gum. Whilst I am loathe to scrape up this unhygenic material examine it in further detail (which is the next logical progression), I fear his speculation may be right. I find the notion hard to accept at first - I mean, WHY IS THERE SO MUCH GUM IN THE FIRST PLACE? HOW CAN THERE BE SO MUCH GUM BEING SPAT OUT ON ONE SINGLE ROAD? AND SO WELL SPACED OUT? - but... perhaps that is the Singaporean in me (the sale of chewing gum is illegal in Singapore). Are the streets full of unknown people's old wads of chewing gum?
....UGHHHHH! EW EW EW!
Is it possible to extract high quality human DNA from very old chewing gum? Is it also possible to determine age and ethnicity from there?