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France will impose a tax on flights leaving the country in an effort to curb emissions from air travel, the government said Tuesday.

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There is likely more carbon dioxide in the atmosphere now than at any other time in the last three million years.

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Energy-related carbon dioxide emissions hit a record high in 2018, the latest report from the International Energy Agency (IEA) found. Emissions rose 1.7 percent to reach a historic 33.1 gigatons (Gt) of carbon dioxide. It was the highest rate of emissions growth since 2013 and 70 percent higher than the average increase since 2010.

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Bernie Sanders holds his first presidential campaign rally at Brooklyn College on March 02 in Brooklyn, New York. Kena Betancur / VIEWpress / Corbis. Getty Images

Bernie Sanders has become the first contender in the crowded 2020 Democratic presidential primary field to pledge to offset all of the greenhouse gas emissions released by campaign travel, The Huffington Post reported Thursday.

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Oceans absorbed nearly a third of carbon dioxide emissions during a 13 year study period. Reilly Wardrope / Getty Images

From wildfires to more extreme storms, the effects of climate change are already devastating communities around the globe. But the effects would be even worse if it weren't for the oceans, new research has confirmed.

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Cars make their way their way over the East River on the Robert F. Kennedy Bridge into Queens on Feb. 25 in New York City. JOHANNES EISELE / AFP / Getty Images

For new cars and trucks released in 2017, carbon dioxide emissions reached a record low, and mileage per gallon reached an all time high, according an U.S. Environmental Protect Agency (EPA) report released Wednesday.

The findings are leading many environmental advocates to ask, if Obama-era fuel economy standards seem to be working, why roll them back, as Trump's EPA has proposed?

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Budget airline EasyJet is set to burn the lowest amount of C02 per passenger kilometer by 2020 of the major publicly-traded airlines. Pier Marco Tacca / Getty Images

As of 2018, the commercial aviation industry accounted for 2.5 percent of all greenhouse gas emissions. If it were its own country, it would be the 7th highest emitter on the planet.

Because of this, some climate activists have begun calling on people to reduce the amount of time they spend in the air, or to stop flying all together. Two Swedish moms, for example, got at least 10,000 people to pledge not to fly at all in 2019 as part of their No-fly 2019 (Flygfritt 2019) campaign, as BBC News reported.

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leonard_c / E+ / Getty Images

By Tim Radford

For forests, it really does help to be young. British scientists who have identified the vital factor that shows what makes a forest a good carbon sink say young forests use carbon best and absorb it most efficiently.

A new study in the Proceedings of the National Academy of Sciences seems on the face of it to settle an old puzzle with an unsurprising answer. New and young forests make the most efficient and effective carbon sinks.

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KarinaKnyspel / iStock / Getty Images

2018 saw a number of studies pointing to the outsized climate impact of meat consumption. Beef has long been singled out as particularly unsustainable: Cows both release the greenhouse gas methane into the atmosphere because of their digestive processes and require a lot of land area to raise. But for those unwilling to give up the taste and texture of a steak or burger, could lab-grown meat be a climate-friendly alternative? In a first-of-its-kind study, researchers from the Oxford Martin School set out to answer that question.

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Biomass storage at Drax power station in North Yorkshire. Chris Allen

For the first time, carbon dioxide is being captured at a biomass power plant in the UK.

Britain's Drax announced that its pilot bioenergy carbon capture and storage project is expected to capture a ton of CO2 a day from its North Yorkshire-based wood-burning plant. The company is also finding ways to store and use the captured carbon.

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AaronChenPs / Moment / Getty Images

By Jocelyn Timperley

Global transport emissions could peak in the 2030s if railways are "aggressively" expanded, said the International Energy Agency (IEA).

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