Air Up, the German start-up that uses scent capsules to flavour plain water and thereby avoid the consumption of synthetic flavouring agents and sugar, has officially launched in the US. Aimed at the fast-growing health-first food and beverage market, the company raised 18 million euros last year, with Pepsi acquiring a large share. The co-founder of Air Up, Lena Jüngst, commented, "We develope...