In Brief

Physicist's Rongjia Tao has put forward a proposal that could stop wide-spread damage from natural disasters.

Physicist Rongjia Tao believes building 1,000-foot-high walls in the American Midwest could protect the region from tornados. Though the idea may seem somewhat far-fetched, it actually holds scientific value. Because Tornado Alley is mostly grassland and plains, there are no mountain ranges to prevent the collision of warm air flow from the north and the cold air flow from the south, which is what generates turbulence and supercells that spawn tornadoes. So by placing these man-made structures in the eye of the storm, the entire area, which runs from the Dakotas to Texas, would experience fewer tornado threats.

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