Fusion Power
Fusion energy has been long anticipated by the world. We have a lot of fission energy. All of our nuclear reactions provide this energy. The drawback of fission is that it can be risky and generates a lot of trash. It is effective, but not quite as effective as fusion.
We can currently engineer fusion because we are aware that it is possible. However, humans are capable of producing and maintaining fusion, and striving to do so consumes more energy. After all, the sun is powered by it, so that seems quite reliable.
Four million times more energy is produced by fusion than by fossil fuels. Additionally, it may generate four times as much power as a fission reaction while posing no meltdown risk or waste output. Given that it runs on hydrogen, it could theoretically power the entire planet for just pennies a day compared to the price of current energy sources.
You can see how fusion could completely alter the globe with an abundance of inexpensive, clean energy. To make it, all we have to do is use less energy than we do to create it. Perhaps the ITER reactor, which is being constructed to produce fusion at a net gain, will prove worthwhile when it is complete. All we can do is watch and wait.