When asked to justify the making of his dollar-sign paintings, Andy Warhol replied: "I like money on the wall." Perhaps he also meant that art was as good a thing as any to invest in. Judging from the ...

In Kabuuma, a lakeside parish on the outskirts of Kampala, plastic waste once told a familiar story of neglect. Polythene bags drifted into gardens, discarded bottles clogged drainage channels, and ...