Lentil As Anything, a successful Australian restaurant, allows its customers to pay whatever price they feel like paying for the food.
10
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
Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
The Prince Charle Cinema in London has volunteer "ninjas" that hush obnoxious moviegoers.
22