Japan carbon pledge boosts hopes of ammonia backers

Japan’s pledge to become carbon-neutral by 2050 is offering hope to industry heavyweights pushing ammonia as the fuel of the future — but critics say the corrosive gas is still far from a clear-cut clean energy. Burning ammonia, unlike fossil fuels, does not emit planet-warming carbon dioxide, and it is easier to transport than liquid hydrogen, also touted as a potential source of green fuel. That has attracted the interest of a consortium of…