Redefining the second: Optical atomic clock achieves record accuracy in comparison measurement
The next generation of atomic clocks "ticks" with the frequency of a laser. This is about 100,000 times faster than the ...
PBS1d
The clock is ticking on TikTok with potential ban coming this weekend
The clock is ticking on a potential ban on TikTok. In April, Congress and President Biden gave the app’s Beijing-based parent company 270 days to find a new owner or face a shutdown. They argued that ...
President Biden to Deliver His Farewell Address Tonight — Where to Watch
Biden will deliver a farewell address to the nation, which will be carried by all of the major networks and air online. Here's how to watch.
TikTok sellers brace for 'doomsday'
US e-commerce sellers are scrambling to prepare for a potential TikTok ban, with some halting shipments and others testing ...