We've all heard it a zillion times: don't pee in the pool. But why?
Urine contains uric acid, which, when in contact with chlorine, creates cyanogen chloride and trichloramine. These chemicals are bad for your lungs and can cause irritation, especially in indoor pools. So, for the greater good of us all, only pee where other living things pee (ocean: check, forest: check, etc.)!
A new portable machine uses a mixture of sand, bacteria and urine to create an eco-friendly concrete-like material that can be used to make bricks to build houses.
The machine, called 'Dupe', uses a mixture of sand, bacteria and urine to create a material called biostone.