Summary:

- Ancient Greek inventors and scientists made many important discoveries and inventions that are still used today. These include the water mill, the odometer, and the alarm clock.

- The water mill was an early form of hydropower that used the flow of water to turn a wheel and power machinery. This technology was widely used in ancient Greece and is still used in some places today.

- The odometer was a device that measured distance traveled, which was important for ancient Greek armies and traders. Modern cars and other vehicles use similar technology to measure distance.

- The alarm clock was invented by the ancient Greeks to wake people up at specific times. While ancient alarm clocks were mechanical, modern digital alarm clocks work on the same basic principle.