Will the majority of new passenger aircraft sold in 2050 be hydrogen fueled?

Will hydrogen cars be more popular than electric cars in 2030 in the first world?

Can hydrogen have a significant market share as an alternative fuel in automotive industry in next decade?

Will humanity get its hydrocarbon energy via solar-powered hydrocarbon synthesis in the next 20 years (ie by 2035)

Which of the following "colors" of hydrogen will be the cheapest by 2030? [details in description]

Will hydrogen fuel cell vehicles outnumber electric vehicles by 2035?

What decade will US air travel be more than 50% sustainably fueled? Hydrogen/renewable fuels/electric

What power source will replace diesel for long-haul trucking by 2030?

What proportion new car/suv/light truck sales will be hydrogen powered in 2030?

Will China be the leading producer of green hydrogen in 2030?