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Tag: carbon

Scientists say solar system affects Earth’s carbon cycle

Scientists say solar system affects Earth’s carbon cycle

Science
Feb. 11 (UPI) -- Scientists have discovered evidence that Earth's carbon cycle and global climate is influenced by periodic changes in the shape of Earth's path around the sun. According to a new study, published this week in the journal PNAS, scientists found the evidence hiding in ancient layers of mudstone. Chemical analysis of the ancient mudstone revealed links between past orbital changes and two major extinction events, the Triassic-Jurassic mass extinction event, around 201 million years ago, and the Toarcian extinction event, or Toarcian turnover, around 183 million years ago. "Our work shows that for the 18 million years or so in between the Triassic-Jurassic mass extinction and the Toarcian oceanic anoxic event, Earth's global carbon cycle was in a constant state of change," M...
Aviation firms commit to net-zero carbon target

Aviation firms commit to net-zero carbon target

Business
A coalition of aviation industry firms has publicly pledged to cut the sector's net greenhouse gas emissions to zero by 2050.The group, called Sustainable Aviation, includes airlines British Airways and easyJet as well aircraft maker Airbus, and Heathrow Airport. Their pledge - confirming a story first reported by Sky News - is based on the use of more efficient aircraft and engines, sustainable fuels and carbon offsetting measures set out in a "decarbonisation road map".It also includes modernising the use of airspace and streamlined ground operations.The plan would mean the UK can still grow passenger numbers by 70%, in line with current projections, while reducing net emissions from 30 million tonnes of CO2 per year today to zero. ...
Can Microsoft’s ‘moonshot’ carbon goal succeed?

Can Microsoft’s ‘moonshot’ carbon goal succeed?

Technology
Tech giant Microsoft has announced two bold ambitions: firstly, to become carbon negative by the year 2030 - meaning it will be removing more carbon from the air than it emits - and secondly, to have removed more carbon by 2050 than it has emitted, in total, in its entire history.In an interview with the BBC's Chris Fox, Microsoft president Brad Smith admitted that the plan was a "moonshot" - a very big idea with no guaranteed outcome or profitability - for the company.He stressed there was simultaneously a sense of urgency and a need to take the time to do the job properly.He also said that the tools required don't entirely exist yet.Mr Smith talked about tree planting, and direct air capture - a way of removing carbon from the air and returning it to th...
Giant carbon clouds surround young galaxies

Giant carbon clouds surround young galaxies

Science
Dec. 16 (UPI) -- Old -- but newly analyzed -- data from the Atacama Large Millimeter/submillimeter Array in Chile suggest young, growing galaxies are enveloped in a massive cloud of carbon gas. Cosmological models have not previously predicted the presence of such clouds, but using ALMA observations, scientists successfully measured billows of gaseous carbon measuring 30,000 light-years across. "We examined the ALMA Science Archive thoroughly and collected all the data that contain radio signals from carbon ions in galaxies in the early universe, only one billion years after the Big Bang," Seiji Fujimoto, an astronomer at the University of Copenhagen, said in a news release. "By combining all the data, we achieved unprecedented sensitivity. To obtain a data set of the same quality with o...
Climate change: ‘Bleak’ outlook as carbon emissions gap grows

Climate change: ‘Bleak’ outlook as carbon emissions gap grows

Science
Countries will have to increase their carbon-cutting ambitions five fold if the world is to avoid warming by more than 1.5C, the UN says.The annual emissions gap report shows that even if all current promises are met, the world will warm by more than double that amount by 2100.Richer countries have failed to cut emissions quickly enough, the authors say.Fifteen of the 20 wealthiest nations have no timeline for a net zero target.Hot on the heels of the World Meteorological Organization's report on greenhouse gas concentrations, the UN Environment Programme (Unep) has published its regular snapshot of how the world is doing in cutting levels of these pollutants. The emissions gap report looks at the difference between how much carb...