"Receiving the drug itself is a major investment of a patient's time, so if you live 8 km from the nearest clinic and have to go there once a month and you don't have a ready meansoftransport it's a huge investment of your own time, " he told the BBC.
Banking developed in Florence because of the ingenious development of bills of exchange, first as a way of paying debts without having to transport cash, then as a meansof evading the church's usury laws, and finally as a meansof extending credit.
And the business of the airfield's new owner, CargoLifter, is the development of giant airships, a meansoftransport few have taken seriously since the Hindenburg went up in flames in 1937.