Amazon's Jeff Bezos is helping build a clock that will work in 10,000 years

He invested $42 million in the project. LOS ANGELES -- Beyond delivery drones, space travel and other outside projects, Amazon founder Jeff Bezos is also fascinated with time. Bezos announced in a tweet Tuesday that construction had begun on a 500-foot tall "10,000 Year Clock," showing a time-lapse, high-speed video of workers putting it together. The clock itself is described by Bezos as one "designed to be a symbol, an icon for long-term thinking. He is working with the Long Now Foundation to help build the clock that will keep time for the next 10,000 years, says Bezos. "As I see it, humans are now technologically advanced enough that we can create not only extraordinary wonders but also civilization-scale problems," he wrote on a 10,000 Clock website. "We're likely to need more long-term thinking."