For Greta

If everyone did this and we got 10% more toothpaste out of each tube, there would be 10% less empty tubes in landfill, 10% less resources used in the product and packaging, 10% less toothpaste lorries on the road, 10% less fuel burnt, 10% less pollution, and to reflect on that happy position you would have a 10% whiter smile.

Joking aside she is a quite incredible and noble young woman.