A clock based on radioactive thorium atoms realises a long-held ambition, demonstrating a technology that could eventually beat the accuracy of today’s best atomic clocks
Source: [New Scientist](https://www.newscientist.com/article/2530094-first-working-nuclear-clock-heralds-a-new-era-in-timekeeping/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home)