Electric cars have certain advantages over gasoline cars. Chief among them, electric cars don’t emit greenhouse gases. They also have fewer moving parts and require less maintenance. For example, there is no engine oil to change. But before we can … Continue reading →
Asphalt accounts for the surface of more than 90% of American roads. Recently, and worldwide, some of that asphalt contains plastic. If adding waste plastic to asphalt pavement becomes routine, it could sequester vast quantities of it. But are plastic … Continue reading →
Land-based long distance freight traffic in the US moves by rail and truck. Both modes rely on diesel fuel. Freight electrification could lead to a significant drop in greenhouse gas emissions. This post concentrates on freight railway electrification, and especially … Continue reading →
When you think of electric car batteries, you think of lithium-ion batteries. They work well enough for now, but they won’t be adequate for much longer. Volvo has announced its intention to sell only electric vehicles by 2030. Other car … Continue reading →
The aviation industry has long been among the top emitters of greenhouse gases. Now electric airplanes have begun to fly. How much difference can we expect them to make? Some boosters want us to believe that electric aviation will solve … Continue reading →
What is the environmental impact of drones? Careless hobbyists can do a lot of environmental damage with them, but this article concerns professional uses of drones. In responsible hands, they have potential to do a lot of good. Drone delivery, … Continue reading →