You Thought Rain Washes Away Pollution?

I’ve wondered whether rain decreases pollution for a long time because I’ve noticed two things: 1. Sometimes after it rains in Beijing, the sky is gloriously blue. When that happens, many people like me say, “Wow, the rain really washed away the pollution!” 2. But then sometimes it rains and rains, and the sky still … Continue reading You Thought Rain Washes Away Pollution?