Mercury and how, very likely anti-gravity engines are made.
But here are some fun facts:
My point? It can be made. Of course, it will affect fossil fuel in the long term. But, here comes the big kicker!!!
https://www.indexmundi.com/minerals/?product=mercury
https://en.wikipedia.org/wiki/List_of_countries_by_mercury_production
China produced 1600 tons of mercury in 2016!
US? 30 tons? And apparently the US it needs only 30 tons of mercury!
Nothing more!
https://www.usgs.gov/centers/nmic/mercury-statistics-and-information
According to these documents, China produced yearly on average between 1000-2000 tonnes. And from the 2019 report, it looks that in 2017 and 2018, it went up to 3000 tonnes per year.
Well, you tell me, what do you do with 3000 tonnes of mercury in a year?
https://wedocs.unep.org/bitstream/handle/20.500.11822/21725/global_mercury.pdf
https://wedocs.unep.org/bitstream/handle/20.500.11822/27579/GMA2018.pdf
Well, from these reports, I see that on average 300 tonnes of mercury go into the atmosphere, from gold mining. Gold mining being the big bulk of usage of mercury, in China.
As for total usage, they give figures in the region, not really mentioning countries, and they give in time periods (2005-2010, 2010-2015). See pages 46,47 and 81 on the global_mercury.pdf .
Anyways, two questions. Why the need for so much gold, and why the need for so much mercury. On average, it is consumed between 1900-2900 tonnes in east and south east asia. 1000 tonnes max are dedicated to gold mining while more than 1000 tonnes are dedicated to Vinyl chloride monomer, essentially making plastic.
First, one could make the case that it pollutes the environment, both the mining and the plastics part.
Well, secondly, it could be less than reported numbers in usage and more in production, and could, well, produce those anti-gravity devices with mercury.
And, well, since flying saucers use mercury, and China might be a big fan of aliens, then one would ask, what they’re up to, right?
Save the World 
