By Ryan Johnson Authorities declared an environmental emergency on Tuesday for metropolitan Mexico City, one of the world’s most populous megalopolises, as smoke from nearby wildfires pushed pollution to levels deemed potentially harmful to human health. Environmental authorities advised residents to avoid outdoor activities and exercise and remain indoors with windows and doors shut. It […]

In this season of giving thanks, Island of Hawai‘i residents and visitors can be thankful for the return of good air quality, generally free of volcanic air pollution. Since the sharp drop in Kīlauea’s volcanic activity and gas emissions in early August 2018, there has been dramatic improvement in the Island’s air quality. The rest of the state can […]

In 2017, we took a look at Project Portal, Toyota’s plan to test a heavy-duty, zero-emissions truck at the Ports of Long Beach and Los Angeles in California. The idea was to power an 80,000lb (36,288kg) Class-8 tractor-trailer with hydrogen fuel cells and then put it to work hauling shipping containers at one of the nation’s […]