'Worse than anyone expected': Air travel emissions vastly outpace predictions

NEW YORK - Greenhouse gas emissions from commercial air travel are growing at a faster clip than predicted in previous, already dire, projections, according to new research - putting pressure on airline regulators to take stronger action as they prepare for a summit next week.

"Airlines, for all intents and purposes, are becoming more fuel efficient. But we're seeing demand outstrip any of that," said Mr Brandon Graver, who led the new study.Airlines in recent years have invested in lighter, more fuel-efficient aircraft, and have explored powering their planes with biofuel.

The decision by Greta Thunberg, a young climate activist, to sail across the Atlantic rather than travel by air before her speech at the United Nations next week, has refocused attention on aviation's role in causing climate change and its consequences, including sea-level rise and more intense heat waves, hurricanes, flooding and drought.

He added that the group"endorses and welcomes wholeheartedly" calls for the aviation industry to address climate change with greater urgency. Still, the new data from the clean transportation council found that flights from airports in the United States were responsible for almost one-quarter of global passenger flight-related carbon dioxide emissions.

Domestic travel accounted for a large majority of departures in countries including the United States, China, Indonesia, Brazil and Australia.Under a plan adopted by the UN body, the International Civil Aviation Organisation, three years ago, airlines will start to voluntarily offset most of the growth in their carbon dioxide emissions beginning in 2020.

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