Alpha Oumar Diallo hunches over a kitchen counter at a library café in Brooklyn, his nose hovering above a plastic container of brownie batter. Eyebrows furrowed, he tries to pinpoint where this batch ...

The loss of the Swinton mural is a travesty. But perhaps its legacy can be to wake up the guardians of the city's heritage to seek, find, and record what needs saving says Neal Keeling.