Harrison, who with her husband Newton formed the art duo The Harrisons, created work that was “unconventional, to say the least, pushing the very boundaries of what constitutes art. They made topsoil and grew crops in it. They consulted on urban planning projects in Baltimore, Europe and elsewhere. Well before global warming was in the public consciousness, they considered its likely effects through maps and other means. And then there was ‘Hog Pasture,’ one of their earliest works. … They made an actual pasture indoors, with hopes of having a real hog root around in it.”