In 2019 there were 4.5 billion airline passengers worldwide, up from 2.1 billion in 2005 Flying is one of the most carbon-intensive ways to get around . Around 2-3% of global carbon emissions come from aviation , which means that if the sector were a country, it would be the sixth-largest source of CO2 in the world. Besides these emissions from burning jet fuel, planes streaking across the sky also release gases and water vapor into the atmosphere that contribute further to global warming. The aviation industry has committed to halving its net CO2 emissions from 2005 levels by 2050. But the technology that could allow people to keep boarding planes without further damaging the planet doesn’t exist yet. So making this green future a reality is going to require a huge transformation . On top of that, demand for air travel has been steadily increasing since the early 2000s, and is expected to rebound after the pandemic. The US carrier United Airlines, which received a multibillion dollar bailout earlier in the pandemic, wants to go carbon neutral by 2050. DW’s environment podcast "On the Green Fence" spoke to Lauren Riley, the company’s managing director of global environmental affairs […]

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