Civilian aircraft currently emit about 2 percent of anthropogenic CO2 and, once the effects of contrails (human made clouds) are included, cause 5 percent of warming at any moment, though they do not last for centuries like CO2

After 9/11, when all commercial flights in the U.S. were grounded for three days, the diurnal temperature difference increased by up to 1.8 degrees C. The increase was strongest where air traffic was normally densest, said the study’s author, David Travis of the University of Wisconsin. By Fred Pearce, Yale360, July 2019 New research shows that condensation trails from aircraft exhaust …

Car Crashes Aren’t Always Avoidable

The Atlantic, Car Crashes Aren’t Always Avoidable, July 2019 In a country where the laws compel the use of cars, Americans are condemned to lose friends and relatives to traffic violence. My childhood neighbor was a varsity student-athlete, the president of the junior class, and the most popular girl in school. One day in September 1995, a car crash took …

Indoor carbon dioxide levels could be a health hazard, scientists warn: CO2 in bedrooms and offices may affect cognition and cause kidney and bone problems

Nicola Davis @NicolaKSDavis in The Guardian, 8 Jul 2019 Indoor levels of carbon dioxide could be clouding our thinking and may even pose a wider danger to human health, researchers say. While air pollutants such as tiny particles and nitrogen oxides have been the subject of much research, there have been far fewer studies looking into the health impact of CO2. However, …

Why U.S. Cities Aren’t Using More Electric Buses. Also Re-engineering the city around the bicycle

Two reports from the World Resource Institute look at the biggest barriers to electrifying the global bus fleet—and how cities can overcome them  LINDA POON, CityLab, JUN 27, 2019 There were about 425,000 electric buses in service in the world’s cities last year. Almost all—99 percent of them—were in China. The booming industrial city of Shenzhen, in particular, is one of only …

US Air Quality Worsening

A report by the Washington Post says government data shows US air quality is worsening and its overall greenhouse gas emissions are on the rise. The nation’s carbon dioxide emissions rose more than 3% last year, the biggest increase since 2010. A report in March by the State Energy and Environmental Impact Center at the New York University School of Law said the Trump …

Swedish university designs air pollution sensor for streetlights

Jason Plautz@Jason_Plautz Smart Cities Dive June 18, 2019 Researchers at Sweden’s Chalmers University of Technology have developed an optical nano-sensor that detects low concentrations of air pollution and is small enough to be mounted on a streetlight, according to a release from the university. The device measures nitrogen dioxide pollution, which largely comes from automobile traffic or industrial activity. Breathing nitrogen dioxide …

One in four U.S. homes is all electric. Share of houses with heat pumps instead of gas heating rose from 8% to 12% between 2005-2015.

MAY 1, 2019 One in four U.S. homes is all electric USEIA Source: U.S. Energy Information Administration; 2005, 2009, and 2015 Residential Energy Consumption Surveys A growing number of homes in the United States are all electric, with 25% of homes nationwide using only electricity according to EIA’s 2015 Residential Energy Consumption Survey (RECS). The share of all-electric homes has risen in each census …

One in every three Americans struggle to pay their energy bills, and that burden is three-times greater on low-income households.

One in every three Americans struggle to pay their energy bills, and that burden is three-times greater on low-income households. One in three U.S. households faced challenges in paying energy bills in 2015 Nearly one-third of U.S. households (31%) reported facing a challenge in paying energy bills or sustaining adequate heating and cooling in their home in 2015. According to the …

Giving fair warning: state/province/national bans on sale of gas-powered vehicles, now in BC and proposed by Senator from Oregon

British Columbia has just passed the Zero-Emission Vehicles Act (ZEVA) into law, and it could transform the Canadian province’s roads in the coming years. Under the new rules, 10 percent of all light-duty cars and trucks sold in BC by 2025 must be emission-free (electric, plug-in hybrid electric or hydrogen fuel cell) vehicles. By the time 2040 rolls around, the province will …

India Offers $360 Million Subsidy For 5,000 Electric Buses and sets deadlines starting in 2021 for EV conversion of Uber and Ola, motor cycles and scooters, and new commercial vehicles

June 8th, 2019 by Smiti on Clean Technica The Indian government plans to incentivize cities to include electric buses to their public transport fleet through financial subsidies. The Ministry of Heavy Industries and Public Enterprises has issued an Expression of Interest (EoI) document to invite proposals from states, government departments, transportation departments, and municipal bodies for procurement of electric buses across 40 cities. The subsidy …