Bitcoin Tests Key Support as Oil and AI Fears Squeeze Markets

The first and largest cryptocurrency, created in 2009, with a fixed maximum supply and no central issuer.

Its price swings and adoption by funds and companies make it a bellwether for the whole crypto market.

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.