Teaching tool created for hydrology education When it rains, streams rise. When it stops, they fall.This article is brought to you by Phys.Org. What Christian Reconstructionism is, and why it matters in US politics Expert Q&A on post-war legal battle that changed Canadian citizenship Police-related stress is associated with health risk for black women The G20 was built to stabilize the world’s economy—but it’s failed on climate, debt and inequality