Do people who sit facing south while playing Mahjong fart more than those who face north? What? You don't know? Well, here's a study for you.
A group from University of Arizona's College of Biomedical Engineering has figured out how to turn a smartphone into an analytical instrument. It's capable of measuring an insanely small quantity of norovirus – the bug the causes viral gastroenteritis. Water samples can now be checked for viral contamination. Very clever, indeed.