Q1556In January 1919 a storage tank in Boston burst and released two million gallons of molasses. The wave was eight metres high, moved at around 56 km/h, and killed twenty-one people.
The tank had leaked so persistently that locals collected the drips, and it had been painted brown to hide the seepage. When it gave way it flattened buildings and buckled the elevated railway. Molasses is a non-Newtonian fluid: it moved fast enough to outrun people, then thickened as it cooled, so rescuers had to cut victims free. The court case that followed ran for years and helped establish that companies must answer for the structures they build. Residents insisted the harbour smelled sweet on hot days for decades afterwards.








