Autonomous excavator constructs a 6-meter-high dry-stone wall

China Has Started Digging a Mysterious 10,000-Meter Deep Hole

Path forward begins to emerge for Thirty Meter Telescope, which would be larger than any other current optical telescope and would sit atop the dormant volcano Mauna Kea in Hawaii.

Jurassic Sauropod Dinosaur Had 15-Meter-Long Neck