December 4, 2019

2019 CO2 Emissions Break Records


Scientific American reported that global carbon emissions will hit an all-time high in 2019, eclipsing the record set in 2018.  According to a report from the Global Carbon Project, an international research consortium that is tracking greenhouse gases, emissions from industrial activities and the burning of fossil fuels will pump an estimated 36.8 billion metric tons of carbon dioxide into the atmosphere. And total carbon emissions from all human activities, including agriculture and land use, will likely cap off at about 43.1 billion tons.

The Global Carbon Project’s estimate reflects a 0.6% increase in the world’s fossil fuel emissions for 2019, representing their “preliminary” estimate, so the number is not final.  However, despite the jump from 2018, this number is a conservative estimate reflecting a lower growth rate for emissions than seen in previous years.  It is not clear if the slowing growth of emissions will continue in the long term. Other recent short-term trends have sparked temporary optimism, only to quickly reverse themselves.

Between 2014 and 2016, global carbon emissions remained mostly flat, raising hopes the world’s carbon output may have peaked for good. But emissions began to rise again in 2017 and have continued growing through 2019.

Read more at Scientific American, "CO2 Emissions Will Break Another Record in 2019."

April 27, 2013

Nuclear power saves lives

Scientists working at NASA's Goddard Institute published a study that quantifies how many deaths that would have been caused by fossil fuels if burned for power, were avoided as a result of having had nuclear power displace the power from coal, oil or gas.  The answer is 1.8 million and growing every year that the coal is not burned.

Drs. Pushker Kharecha and James Hansen published Prevented Mortality and Greenhouse Gas Emissions from Historical and Projected Nuclear Power in the journal Environmental Science and Technology with the striking figure of 1.8 million as the number of lives saved by replacing fossil fuel sources with nuclear. They also estimate the saving of up to 7 million lives in the next four decades, along with substantial reductions in carbon emissions, were nuclear power to replace fossil fuel usage on a large scale.

In addition the study finds that the proposed expansion of natural gas would not be as effective in saving lives and preventing carbon emissions. In general the paper provides optimistic reasons for the responsible and widespread use of nuclear technologies in the near future. It also drives home the point that nuclear energy has prevented many more deaths than what it has caused.

References:

ACS Publications"Prevented Mortality and Greenhouse Gas Emissions from Historical and Projected Nuclear Power," by Pushker A. Kharech and James E. Hansen, on March 15, 2013, Environ. Sci. Technol. 2013, 47, 9, 4889–4895.

Scientific American, "Nuclear power may have saved 1.8 million lives otherwise lost to fossil fuels, may save up to 7 million more." by by Ashutosh Jogalekar on April 2, 2013.

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