ethanol

And just this week, Newsom signed a bill that will allow gas stations to sell cheaper gas with 15% ethanol, even though state air regulators have not completed their review of the fuel.

Based on the amount of fruit they normally eat, the chimps were ingesting around 14 grams of ethanol - equivalent to nearly two UK units, or roughly one 330ml bottle of lager.

It is similar to ethanol, which is used for alcoholic drinks, but it is cheaper and more toxic to humans because of the way it is processed by the body.

The government has defended its decision to not pass the recommendations, saying that at the time of the report's relase, ethanol was cheaper than petrol.

After weeks of talks, the government said on Friday it would not be providing financial support for the bioethanol sector, which is facing increased competition from imported US ethanol.