Back in 2015-2016, WDW converted its bus fleet to run on R50 biodiesel. Though not perfect, it reduces the nonrenewable footprint from the bus system.
Electric buses haven't caught on as quickly in the U.S. as they have in China. Bloomberg reported that as of 2017, 99% of the 385,000 electric buses in the world were operating in China. Shenzhen is the first city with an all-electric public transport network. That said, battery powered electric buses are starting to catch on in the U.S., as manufacturers are coming to market with products with the range and reliability that metropolitan transit authorities need.
I was also surprised to learn that Disney, partnering with Harvest power, has a biofuel facility at the Reedy Creek energy facility that generates 5.4 MW of combined heat and electricity from food waste. (sadly a worker died there last year after falling into a vat of oil)
Luckily, the Montreal Protocol on Substances that Deplete the Ozone Layer has leveled off or reversed the amount of various chlorofluorocarbons that were destroying the ozone layer and created the hole over the Antarctic. Of note, this treaty was ratified by every country in the world.
The EPA initiated its
Acid Rain Program in 1995 as the implementation of the
1990 Clean Air Act to create market incentives to reduce the emission of sulfur dioxide and nitrogen oxides. Since then, annual emission of sulfur dioxide have reduced from 17 million tons to 9 million tons. Over the same time period, regulations in the EU reduced emissions there even more (by 70%).
I think it's great when problems threatening all of us are identified and responded to in a timely fashion, leading to mitigation and reduced mortality. Isn't that the way things are supposed to work?