19 million-year-old wood chips were found in sediment layers in the Bay of Bengal.
The Pliocene, 3 million years ago, was the last time atmospheric carbon dioxide concentrations were above 400 parts per million.
Scientists from the Deep Carbon Observatory have provided results from a decade-long study into the world's carbon reservoirs.
Researchers reconstructed atmospheric carbon dioxide concentrations dating back 2.5 million years.
"The Amazon is a carbon sink, which slows the rate of carbon dioxide build up in the atmosphere, and thus climate warming," said James Randerson from the University of California, Irvine.
The prototype was found to be highly efficient at producing formic acid—a promising fuel carrier that could revolutionize hydrogen cars.
Earth had not seen carbon dioxide concentrations above current levels for at least two million years.
The soft drink industry generates vast amounts of waste product. Could some of this be put to good use?
Entrepreneur Sukhmeet Singh is buying the straw Indian farmers used to burn and is turning it into fuel and other products— dramatically reducing pollution in the process.
The president is embracing climate change deniers so hardcore it would be comical if it weren't tragic.
Stratocumulus clouds became unstable as CO2 concentrations increased, simulations reveal.
The Clarion-Clipperton Fracture Zone is currently being explored as an area for deep sea mining.
While artificial photosynthesis techniques have been around for decades, they have not been adopted to produce renewable energy due to several drawbacks.
Levels of the greenhouse gas carbon dioxide, which traps heat in Earth's atmosphere, reached record highs in April.
To the disbelief of spectators, all of the animals which entered into the gates perished, while miraculously, the priests emerged unscathed.
Humans are pumping record amounts of CO2 into the atmosphere each year.
The actor and environmental activist said "we're all to blame" for the climate crisis.
Scientists say the biggest extinction event ever was caused by comparable rate of cO2 emissions to those seen today.
The Danes are spending billions on wind turbines in the city and have found an ingenious way to win over its citizens