Wageningen University

Biofuel from human urine

Micro-algae can grow on undiluted human urine. This offers opportunities for new water purification methods and perhaps even for converting urine into usable chemical substances and biofuels.

Sep 30, 2013 4.3 / 5 (7) 0

Spheres can form squares

Everybody who has tried to stack oranges in a box knows that a regular packing of spheres in a flat layer naturally leads to a hexagonal pattern, where each sphere is surrounded by six neighbours in a honeycomb-like ...

May 24, 2013 4.7 / 5 (3) 0