"auto manufacturing" entries
How we make cars is a bigger environmental issue than how we fuel them.
Around two billion cars have been built over the last 115 years; twice that number will be built over the next 35-40 years. The environmental and health impacts will be enormous. Some think the solution is electric cars or other low- or zero-emission vehicles. The truth is, if you look at the emissions of a car over its total life, you quickly discover that tailpipe emissions are just the tip of the iceberg.
An 85 kWh electric SUV may not have a tailpipe, but it has an enormous impact on our environment and health. A far greater percentage of a car’s total emissions come from the materials and energy required for manufacturing a car (mining, processing, manufacturing, and disposal of the car ), not the car’s operation. As leading environmental economist and vice chair of the National Academy of Sciences Maureen Cropper notes, “Whether we are talking about a conventional gasoline-powered automobile, an electric vehicle, or a hybrid, most of the damages are actually coming from stages other than just the driving of the vehicle.” If business continues as usual, we could triple the total global pollution generated by automobiles, as we go from two billion to six billion vehicles manufactured.
The conclusion from this is straightforward: how we make our cars is actually a bigger environmental issue than how we fuel our cars. We need to dematerialize — dramatically reduce the material and energy required to build cars — and we need to do it now. Read more…