The oxygenation of Earth’s atmosphere was thanks, in part, to iron and silica particles in ancient seawater, according to a new study by geomicrobiologists at the University of Alberta. But these results solve only part of this ancient mystery. Early organisms called cyanobacteria produced oxygen through oxygenic photosynthesis, resulting in the oxygenation of Earth’s atmosphere.

Trying to tackle climate change by replacing forests with crops for bioenergy power stations that capture carbon dioxide (CO2) could instead increase the amount of CO2 in the atmosphere, scientists say. Biomass Energy with Carbon Capture and Storage (BECCS) power stations are designed to produce energy and store the resulting carbon dioxide (CO2) in bedrock

Keeping global warming to within 1.5-2 degrees C may be more difficult than previously assessed, according to researchers. An international team of scientists has published a study in the Proceedings of the National Academy of Sciences (PNAS) showing that even if the carbon emission reductions called for in the Paris Agreement are met, there is

An international team of paleontologists and other geoscientists has discovered the first North American co-occurrence of hadrosaur and therizinosaur tracks in the lower Cantwell Formation within Denali National Park, suggesting that an aspect of the continental ecosystem of central Asia was also present in this part of Alaska during the Late Cretaceous. This comprehensive cross-disciplinary

They’re impossible to see with the naked eye. They’re difficult to pronounce. But coccolithophores, a single-celled plankton, have an outsized effect on oceans due to their sheer quantity—their blooms are visible from space—and because of the fundamental role they play in food chains and the carbon cycle. Small fish and zooplankton feast on them, and

It happened once before, and it could happen again. That’s the warning from ocean scientists at the University of Toronto and the University of California, Santa Cruz in a study published recently in Science that shows how an increase in CO2 in Earth’s atmosphere more than 50 million years ago, dramatically changed the chemistry of

Dry months are getting hotter in large parts of the United States, another sign that human-caused climate change is forcing people to encounter new extremes. In a study published today in Science Advances, researchers at the University of California, Irvine report that temperatures during droughts have been rising faster than in average climates in recent

The vast reservoir of carbon stored beneath our feet is entering Earth’s atmosphere at an increasing rate, most likely as a result of warming temperatures, suggest observations collected from a variety of the Earth’s many ecosystems. Blame microbes and how they react to warmer temperatures. Their food of choice—nature’s detritus like dead leaves and fallen

A new study based on evidence from past warm periods suggests global warming may be double what is forecast. Future global warming may eventually be twice as warm as projected by climate models and sea levels may rise six metres or more even if the world meets the 2°C target, according to an international team

Failure to meet the United Nations’ 2ºC warming limits will lead to sea level rise and dire global economic consequences, new research has warned. Published today in Environmental Research Letters, a study led by the UK National Oceanographic Centre (NOC) found flooding from rising sea levels could cost $14 trillion worldwide annually by 2100, if

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