With biofuel potential limited and emissions rising, the need for industry to act is urgent. Hopes rest on a global UN carbon offset scheme to be negotiated at the ICAO summit this week – but critics remain unconvinced

When a South Africa Airways scheduled flight flew from Johannesburg to Cape Town last month, it carried nearly 300 passengers.

Neither the passengers or the pilots would have noticed any difference between that flight and any other.

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Source: Guardian Environment