On election day, all eyes will be on battleground Pennsylvania. And this time around, one key county has a new high-tech ...

The shortage of healthcare workers has inspired a high-tech solution: real doctors beamed into rooms as holograms. NBC News' Priscilla Thompson reports.

Science and technology should lead the modernisation of China, President Xi Jinping emphasised, as he gave a fresh push to innovation in the southeastern hi-tech hub of Hefei earlier this week.