Geography
Monsoon Systems: Seasonal Wind Reversals and Regional Rainfall Extremes
Quick fact
The Indian summer monsoon can deliver nearly 80% of that country's annual rainfall in just four months, and a slight deviation can cause devastating droughts or floods.
Why this is interesting
You know that feeling when the sky opens up and rain pours for weeks? In parts of India, that 'feeling' is a seasonal event that billions rely on—a dramatic shift in winds that turns dry landscapes into green regions. But why does the wind reverse direction every year?