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Secrets of the Eye

“Keep your eye on the ball,” is good advice for a 5-year-old. It is a rough, approximate instruction. When analyzed with a 5-year-old’s level of understanding, it accurately describes the role the eye is...

Coco’s Cannon

You’re 5’ 9’’, 140 lbs (1.79m, 64kg), and female. How hard can you serve? Answer: at least 124 mph (200 km/h), because that’s how fast the rocket Coco Gauff threw down in her third...