Multi-ton cloud masses floating weightlessly overhead, explosive 10-meter-tall whirlwinds of fire, hurricane-force wind tunnels pushing human endurance to the edge, and the microscopic physics behind lethal hailstones. Welcome to Planet Earth’s Deadly Extreme Weather | Wild Weather | Spark. In this feature-length science documentary from Spark, step inside the hidden mechanics and daring real-world experiments that demystify the three core ingredients governing all weather on Earth: Wind, Water, and Temperature.