The content originally appeared on: CNN London CNN Business - US oil prices have fallen to their lowest level since December 2021 on fears that protests in China against Covid-19 lockdowns will dent demand. West Texas Intermediate crude oil futures, the North American benchmark, slid 3.2% on Monday to trade close to $74 a barrel, a level last reached in late December. Futures for Brent crude, the global benchmark, also dropped 3.3% to trade close to $81 a barrel. That's […]