WASTEWATER MANAGEMENT

In Switzerland, rain often causes sewage systems to overflow. This sends untreated wastewater into rivers and lakes. But no one really knows how bad this is. Cheap sensors could help track these spills. Yet, most wastewater groups don't use them. It's not a tech problem. It's more about politics and

The world's water treatment plants churn out a mountain of sewage sludge every day. This stuff is a hassle to manage and dispose of safely because it's messy and expensive. The sun is powerful. A lot of people have been thinking about using it to dry out this sludge. This is the process of using