Tag Archives: carbon dioxide

These machines scrub greenhouse gases from the air – an inventor of direct air capture technology shows how it works

One ‘mechanical tree’ is about 1,000 times faster at removing carbon dioxide from air than a natural tree. The first is to start operating in Arizona in 2022.
Illustration via Arizona State University

Klaus Lackner, Arizona State University

Two centuries of burning fossil fuels has put more carbon dioxide, a powerful greenhouse gas, into the atmosphere than nature can remove. As that CO2 builds up, it traps excess heat near Earth’s surface, causing global warming. There is so much CO2 in the atmosphere now that most scenarios show ending emissions alone won’t be enough to stabilize the climate – humanity will also have to remove CO2 from the air.

The U.S. Department of Energy has a new goal to scale up direct air capture, a technology that uses chemical reactions to capture CO2 from air. While federal funding for carbon capture often draws criticism because some people see it as an excuse for fossil fuel use to continue, carbon removal in some form will likely still be necessary, IPCC reports show. Technology to remove carbon mechanically is in development and operating at a very small scale, in part because current methods are prohibitively expensive and energy intensive. But new techniques are being tested this year that could help lower the energy demand and cost.

We asked Arizona State University Professor Klaus Lackner, a pioneer in direct air capture and carbon storage, about the state of the technology and where it’s headed. Continue reading

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Report Reveals Indigenous Resistance Disrupts Quarter of US and Canadian Emissions

“The numbers don’t lie. Indigenous peoples have long led the fight to protect Mother Earth and the only way forward is to center Indigenous knowledge and keep fossil fuels in the ground.”

By Jessica Corbett, staff writer for Common Dreams.  Published 9-1-2021

Water protectors stop construction of Energy Transfers Partners’ Bayou Bridge Pipeline in 2017. (Photo:Indigenous Environmental Network)

Indigenous resistance to fossil fuel projects in the United States and Canada over a recent decade has stopped or delayed nearly a quarter of the nations’ annual planet-heating pollution, according to a report released Wednesday.

The greenhouse gas pollution for Turtle Island, the land now known to settler nation-states as North America, totaled 6.56 billion metric tons of carbon dioxide equivalent in 2019—5.83 billion metric tons CO2e for the U.S. and 727.43 million metric tons CO2e for Canada. Continue reading

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Atmospheric CO2 Levels Haven’t Been This High in 800,000 Years: NOAA

A major report on climate says both greenhouse gas concentrations and global sea levels hit record highs in 2020.

By Kenny Stancil, staff writer for Common Dreams.  Published 8-25-2021

Flash flood in Belgium – July 2021. Photo: Régine Fabri’Wikimedia/CC

Bolstering the case for meaningful climate action, a major report released Wednesday found that Earth’s atmospheric greenhouse gas concentrations and sea levels both hit record highs in 2020.

Based on the contributions of more than 530 scientists from over 60 countries and compiled by the U.S. National Oceanic and Atmospheric Administration (NOAA), State of the Climate in 2020 is the 31st installment of the leading annual evaluation of the global climate system. Continue reading

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‘Out of Control’: Brazilian Amazon Deforestation Hits Highest Level in a Decade

“At this rate, we will not be able to keep global warming below 1.5ºC, a target defined in the Paris agreement,” said the conservation institute Imazon.

By Brett Wilkins, staff writer for Common Dreams. Published 8-20-2021

Kayapó Mekragnotire people blockading the BR-163 highway in Pará – 2020. Photo: Avispa Midia

Encouraged by President Jair Bolsonaro, deforestation in Brazil’s Amazon rainforest surged to its highest annual level in a decade over the past year, with researchers warning that the accelerated destruction of the critical carbon sink is imperiling the ability to keep planetary heating below the Paris climate agreement’s 1.5ºC target.

Imazon, a Brazilian research institute whose mission is to promote conservation and sustainable development, reported Thursday that from August 2020 to July 2021, 10,476 square kilometers of Amazon rainforest were destroyed, a 57% increase over the previous 12-month period. Continue reading

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‘Unimaginably Catastrophic’: Researchers Fear Gulf Stream System Could Collapse

“Scientists say we cannot allow this to happen. People in power stand in our way.”

By Jessica Corbett, staff writer for Common Dreams.  Published 8-5-2021

The Gulf Stream is an ocean current that carries warm water from the Gulf of Mexico into the Atlantic Ocean. (Image: NASA)

While heatwaves, fires, and floods produce warnings that “we are living in a climate emergency, here and now,” a scientific study suggested Thursday that a crucial Atlantic Ocean current system could collapse, which “would have severe impacts on the global climate system.”

The study, published in the journal Nature Climate Change, focuses on the Atlantic Meridional Overturning Circulation (AMOC), which includes the Gulf Stream. As the United Kingdom’s Met Office explains, it is “a large system of ocean currents that carry warm water from the tropics northwards into the North Atlantic,” like a conveyor belt. Continue reading

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Planet’s Vital Signs Are Reaching Dangerous ‘Tipping Points’ Amid Climate Crisis, Scientists Warn

“We need to stop treating the climate emergency as a stand-alone issue—global heating is not the sole symptom of our stressed Earth system.”

By Julia Conley, staff writer for Common Dreams. Published 7-28-2021

Human activity may be pushing the climate beyond dangerous ‘tipping points,’ say 14,000 scientists. As the extreme drought emergency continues in California, historically low water levels are visible at Lake Oroville on July 22, 2021 in Oroville, California. Photo: NOAA

More than a year after the Covid-19 pandemic shut down economies around the world and sharply reduced worldwide travel—sparking speculation among some that emissions would plummet as a result—a coalition of scientists said in a paper published Wednesday that the planet is nonetheless reaching multiple “tipping points,” with levels of sea ice melt, deforestation, and other markers revealing that urgent action is needed to mitigate the climate emergency.

“The extreme climate events and patterns that we’ve witnessed over the last several years — not to mention the last several weeks — highlight the heightened urgency with which we must address the climate crisis,” said Philip Duffy, co-author of the study and executive director of the Woodwell Climate Research Center in Massachusetts. Continue reading

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‘Biggest Story in the World Right Now’: Humanity Has Flipped Amazon From Carbon Sink to Source

The findings, said one expert, “show that the uncertain future is happening now.”

By Jessica Corbett, staff writer for Common Dreams. Published 7-14-2021

Fire in the Amazon. Photo: Luísa Mota/flickr/CC

Following years of warnings and mounting fears among scientists, “terrifying” research revealed Wednesday that climate change and deforestation have turned parts of the Amazon basin, a crucial “sink,” into a source of planet-heating carbon dioxide.

Though recent research has elevated concerns about the Amazon putting more CO2 and other greenhouse gases into the atmosphere than it absorbs, the new findings, published in the journal Nature, were presented as a “first” by scientists and climate reporters. Continue reading

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House Passes Resolution to Reverse ‘Reckless’ Trump-Era Methane Rule

“Biden should direct the EPA to use the full power of the Clean Air Act to reduce methane emissions from oil and gas by 65% by 2025,” said one advocate.

By Kenny Stancil, staff writer for Common Dreams. Published 6-25-2021

Gas well flaring in the Marcelus Shale. Screenshot: YouTube

Progressive advocates celebrated the U.S. House’s passage Friday of a resolution to reinstate federal regulations on methane pollution, while also emphasizing that confronting the climate emergency requires implementing stronger safeguards.

The resolution reversed the Trump administration’s rollback last August of the Environmental Protection Agency’s rules governing oil and gas companies’ emissions of the potent greenhouse gas. Continue reading

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UN Chief Warns World on ‘Verge of the Abyss’ as WMO Releases Climate Report

The warning came alongside the release of the World Meteorological Organization’s State of the Global Climate in 2020, which said it was one of the three warmest years on record.

By Andrea Germanos, staff writer for Common Dreams. Published 4-19-2021

The CZU lightning complex fire burns along Butano Ridge and in Pescadero Creek Park, in the Santa Cruz Mountains, California. This fire would later grow to over 85,000 acres and destroy over 900 structures. Photo: Inklein/Wikimedia Commons

United Nations Secretary-General António Guterres warned Monday that humanity stands “on the verge of the abyss” as the climate crisis pushes the world “dangerously close” to hitting the 1.5 degree Celsius target limit of warming.

Guterres delivered the ominous remarks at the launch of the World Meteorological Organization’s (WMO) State of the Global Climate report—a publication he said “should alarm us all.” Continue reading

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‘We Have to Act’: Atmospheric CO2 Passes 420 PPM for First Time Ever

“It is truly groundbreaking,” Greta Thunberg said of the growing concentration of the heat-trapping gas. “And I don’t mean that in a good way.”

By Kenny Stancil, staff writer for Common Dreams. Published 4-6-2021

FridaysForFuture protest in Berlin on 3-22-2019. Photo: Leonhard Lenz/CC

The concentration of atmospheric carbon dioxide surged past 420 parts per million for the first time in recorded history this past weekend, according to a measurement taken at the Mauna Loa Observatory on the Big Island of Hawaii.

When the National Oceanic and Atmospheric Administration (NOAA) research station “began collecting CO2 measurements in the late 1950s, atmospheric CO2 concentration sat at around 315 PPM,” the Washington Post reported. “On Saturday, the daily average was pegged at 421.21 PPM—the first time in human history that number has been so high.” Continue reading

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