Is the S&P 500 No Longer the Economy? DataTrek's Nick Colas Weighs In

Computer systems that perform tasks that normally require human intelligence, such as understanding language, recognising images or making decisions.

AI is changing work, media and public services, raising questions about jobs, safety and regulation.

The annual return an investor earns on a bond, which moves in the opposite direction to the bond's price.

Rising yields mean higher borrowing costs for governments, companies and home buyers.