Passengers on the Beijing subway can pay with plastic bottles.
29
Holding hands with someone you love can alleviate physical pain as well as stress and fear.
26
It 'snows' metal on Venus.
13
Billions of neutrinos pass unnoticed through your body every second.
6
There's a café in France which charges €7 for a coffee to rude customers and €1.40 to people who talk politely to staff.
17
Christmas Island has bridges for crabs to stop them getting run over during the mass migration.
9