Swiss engineers have developed a machine that removes the greenhouse gas carbon dioxide directly from the atmosphere. It works by binding CO2 on filters coated with specific chemicals, and the gas is later released for capture.
New research suggests that unless we rapidly cut greenhouse gas emissions we will have to extract far more CO2 from the atmosphere than we are technically prepared for.
Researchers estimate that global carbon dioxide emissions will rise around 2 percent in 2017, making it the first increase in three years. Experts warned that "time is running out" to limit the effects of climate change.
The EU Commission wants carbon dioxide emissions from cars to be reduced by 30 percent by 2030, it announced on Wednesday. Opposition has been strong, not least from the powerful German car industry.
Soils are a double-edged climate sword. They are huge reservoirs of organic carbon and can act as a carbon sink. But they can also release CO2 into the atmosphere when used unsustainably.
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