Could aliens ever visit Earth? An aerospace scientist unpacks the challenges of interstellar spaceflight
Kai James, Georgia Institute of Technology On May 22, 2026, the Pentagon released a second batch of previously…
How was the wheel invented? Computer simulations reveal the unlikely birth of a world-changing technology nearly 6,000 years ago
The assumption was that the wheel evolved from wooden rollers. Tetra Images via Getty Images Kai James, Georgia…