First Paris, then a pair of German cities, and now the Eternal City. Two weeks ago, the mayor of Rome announced on her Facebook page that the city would ban diesel cars altogether by 2024. It's not clear whether the ban applies solely to the older, most-polluting diesels as it does already in Paris, or to any vehicle with a diesel engine. CHECK... Rome joins European ban-diesel bandwagon after German court ruling
First Paris, then a pair of German cities, and now the Eternal City. Two weeks ago, the mayor of Rome announced on her Facebook page that the city would ban diesel cars altogether by 2024. It's not clear whether the ban applies solely to the older, most-polluting diesels as it does already in Paris, or to any vehicle with a diesel engine. CHECK... 
![Global carbon dioxide emissions, 1850-2030 [CO2 Information Analysis Center, World Energy Outlook]](https://images.hgmsites.net/tmb/global-carbon-dioxide-emissions-1850-2030-co2-information-analysis-center-world-energy-outlook_100631742_t.gif)
The most recent detailed studies on the likely warming of Planet Earth are grim indeed, suggesting that we are collectively at "very high risk" for the most extreme effects of climate change. To stem that, mankind collectively will have to reduce its ongoing emissions of carbon dioxide radically and immediately. Now, one longtime advocate of... 
![Exhaust emissions from tailpipe [photo: Simone Ramella, 2005, used under Creative Commons 2.0]](https://images.hgmsites.net/tmb/exhaust-emissions-from-tailpipe-photo-simone-ramella-2005-used-under-creative-commons-2-0_100644014_t.gif)
That huge intake of breath you may have heard from across the Atlantic Ocean was the sound of German carmakers gasping at a court decision handed down on Tuesday. After a week's delay in issuing its ruling, a German court decided that individual cities in the country may ban vehicles with diesel engines to reduce air pollution. The decision could... 
Last November, the Environmental Protection Agency said it would rescind a rule that banned companies from fitting outdated, older, and dirtier diesel engines into brand-new "glider" chassis-cab trucks. Among the many regulations to limit emissions and other forms of pollution that EPA administrator Scott Pruitt has axed, this one was particularly... 
Fiat Chrysler will abandon the use of diesel engines in all its passenger vehicles by 2022, according to a report Sunday. The company has seen demand for diesel versions of its passenger cars in Europe collapse and faces high costs to get diesel engines to comply with emission limits in real-world use, it said. FCA is expected to announce the move... 
Investigators probing U.S. models of Mercedes-Benz sold with diesel engines have found software, possibly illegal under EPA rules, that helped them pass emission tests. Such software may be similar to that notoriously used in 580,000 vehicles sold by VW, Audi, and Porsche from 2009 through 2015 in what became the Volkswagen diesel emission... 
The processes of climate change don't care about politics. Or economics. Or public sentiment about science. Last December, an analysis showed the most accurate climate-science models to date predicted the worst effects in future years. Now, two more grim assessments have arrived. DON'T MISS: Most-accurate climate-change models suggest worst... 
Throughout the world, the accepted science of climate change is no longer in dispute. Every nation on earth has now signed the Paris Climate Treaty to develop plans to reduce the carbon emissions that contribute to global warming. Only one plans to withdraw from that treaty: the United States of America. DON'T MISS: All renewable energy types to... 
Today, there are roughly 750,000 plug-in electric vehicles on U.S. roads and about 3,800 powered by hydrogen fuel cells. Proponents of each type of vehicle argue strenuously that their powertrain is a better way to produce vehicles with zero emissions from the tailpipe. Electric cars can be charged at home overnight, and electricity in many areas...