Massive sinkholes threaten homes in Brazil

A town in northeastern Brazil declared a state of public calamity on February 11 due to severe erosion threatening homes, according to the municipality. The recent sinkholes are an escalation of a problem that residents have been watching unfold for the last 30 years, as rains slowly erode soils made vulnerable by their sandy nature, plus a combination of poorly planned building work and deforestation. - REUTERS