The Korea Institute of Energy Research just discovered a way to produce hydrogen fuel without any fossil fuels.

About 50% of the world's food production relies on ammonia fertilizer, an important source of nitrogen that is essential for plant growth. In some fields, it is not uncommon to see 90 kg (200 pounds) of ammonia per acre for each growing season.

Scientists at Australia's Monash University claim to have made a critical breakthrough in green ammonia production that could displace the extremely dirty Haber-Bosch process, with the potential to eliminate nearly two percent of global greenhouse emissions. Ammonia is one of the most heavily-produced industrial chemicals in the world, and absolutely vital to modern society.

Arguably the most important (if least well known) industrial advancement of the 20th century, the Haber-Bosch ammonia synthesis process essentially conquered food scarcity by creating the means to mass produce fertilizer-fertilizer then used to fortify food harvests around the world.