Can you burn off your fingerprints with pineapples?

There's a machine that takes off most of the outer skin of the pineapple (leaving it a cylindrical shape with the core punched out) and it rolls down this conveyor belt. There is still some of the green skin on the pineapple (as the machine is not perfect). read more

Of course, when you swallow it, it doesn’t stay in the same place for long and is soon digested by your own body – in particular the acid in your stomach destroys the protease, so pineapples are quite safe to eat (as long as you don’t try to eat a whole one in one go!!!!). read more