carbon dioxide

A groundbreaking study spanning 66 million years reveals a sobering view of Earth’s climatic trajectory, showing that current CO2 levels last appeared 14 million years ago, far earlier than previous estimates. This international research effort, taking seven years to complete, highlights the profound sensitivity of our climate to greenhouse gases and the lasting impact these have over millennia. The study’s findings underscore the urgency for informed climate policy, providing a detailed past-to-present analysis that…

The concentration of atmospheric CO2 is currently at a record high of 419 ppm due to human activities, particularly the burning of fossil fuels. An international team of scientists is examining geological markers to reconstruct Earth’s CO2 history, revealing that today’s levels are the highest in 14 million years. Credit: SciTechDaily.com Carbon dioxide has not been as high as today’s concentrations in 14 million years thanks to fossil fuel emissions now warming the planet.Today atmospheric carbon dioxide is at its…

In a proposed carbon-capture method, magnesium oxide crystals on the ground bind to carbon dioxide molecules from the surrounding air, triggering the formation of magnesium carbonate. The magnesium carbonate is then heated to convert it back to magnesium oxide and release the carbon dioxide for placement underground, or sequestration. Credit: Adam Malin/ORNL, U.S. Dept. of EnergyOak Ridge National Laboratory’s research on magnesium oxide for carbon capture reveals a slowing absorption rate over time due to surface layer…

A new study to be published in Nature suggests that the ocean’s capacity to absorb atmospheric carbon dioxide is 20% higher than previously thought, at 15 gigatonnes per year. This research focused on the role of plankton in carbon transportation to the seabed. Credit: SciTechDaily.com Research reveals that oceans store 20% more carbon dioxide than previously estimated, primarily through plankton transporting carbon to the seabed. This new understanding, however, doesn’t significantly impact the current CO2 emission…

Ask an economist what something scarce should cost and they will normally say whatever someone is willing to pay for it. They will go on to say that the best way to establish that willingness is through markets. There are various systems that price carbon dioxide that way. But they do not provide the same answers. And nor do they tally with what economists think might actually be the right answer. To most people the cost of emitting a tonne of carbon dioxide appears…

Mary Yap has spent the last year and a half trying to get farmers to fall in love with basalt. The volcanic rock is chock full of nutrients, captured as its crystal structure forms from cooling magma, and can make soil less acidic. In that way it’s like limestone, which farmers often use to improve their soil. It’s a little more finicky to apply, and certainly less familiar. But basalt also comes with an important side benefit: It can naturally capture carbon from the atmosphere.Yap’s pitch is part of a decades-long…

By University of Miami Rosenstiel School of Marine, Atmospheric, and Earth Science December 2, 2023 Researchers at the University of Miami have discovered that carbon dioxide’s greenhouse effect intensifies as its atmospheric concentration increases, challenging long-standing beliefs about its constant heat-trapping capability. New study shows potency of the greenhouse gas increases with increased concentrations. A team of scientists found that carbon dioxide becomes a more potent greenhouse gas as more is released…

Animations created by NASA’s Scientific Visualization Studio include images and videos showing what carbon emissions would look like if they were visible in our atmosphere. The videos of the swirling emissions were released this month—and it looks like a grosser, creepier version of the Northern Lights.Prime Day Ain't That 'Green'The visuals are recreated from 2021 carbon dioxide emissions data, according to NASA. They’re shown as swirls all over the planet and how those emissions progressed from the beginning of 2021 to…

Last Updated: June 06, 2023, 11:19 ISTSMEV Urges Government to Impose Green Tax on ICE Vehicles (Photo: SMEV)SMEV urges Green Tax on ICE vehicles to boost EV adoption, combat pollution. Calls for equalizing costs and reducing CO2 emissions for a sustainable futureOn World Environment Day, the Society of Manufacturers of Electric Vehicles (SMEV), the registered association representing Indian electric vehicle manufacturers, has took a bold step by urging the government to impose an additional Green Tax on internal…

It is the circulation of the ocean which, by redistributing heat, limits the temperature difference between tropics and poles to about 30°C. Were the atmosphere alone responsible for moving heat, that difference would be more like 110°C. And, when it comes to anthropogenic global warming, the problem would be far greater without the ocean’s buffering effect. Not only does the ocean absorb heat which would otherwise remain in the air, it also swallows a third of the carbon dioxide…