US crude oil inventories drop 900K barrels, demand up 4%

Unrefined petroleum extracted from the ground; Brent and WTI are its main global price benchmarks.

Oil prices feed into fuel, transport and goods costs, and so into inflation.

A digital currency secured by cryptography and recorded on a blockchain, without a central bank issuing it.

Crypto prices are volatile, and governments are still deciding how to regulate it.