I came across an article online about "Artificial Sun" and would like to share it here. The article states that we are(we will be) facing a big "Energy problem." The population all over the world will reach up to 10 billion in 2050 and we need new power resources that can generate over 40 trillion KWh per year. The amount of power generated in 2019 worldwide was only about 27 trillion KWh. So, that means we will need much more alternative power resources to power the whole earth. In terms of total power output, cost, eco-friendliness and safety, hydroelectric and solar power are not enough and will not meet future demand. One of the solutions to this issue is nuclear fusion generation. Nuclear fusion attracts a lot of attention these days. It is said that nuclear fusion generation is equivalent to creating an artificial sun on the earth. The process involves artificially creating the same nuclear fusion reaction as the one which is generated inside the sun's core. This energy is then extracted/harnessed and supplied to consumers. The fuel for nuclear fusion is heavy hydrogen and tritium. We can get them out of sea and they are an "inexhaustible energy source." In theory, one kilogram(kg) can generate as much energy as 10 million kg of fossil fuel. Now/Currently, the generation of nuclear fusion power has a number of technical challenges, but Korea has developed cutting-edge technology on this and it has stayed ahead of the game. Anyway, the technology is expected to be commercialized in 2040 or 2050. I will turn 85 around that time and I really hope the commercialization will be a lot faster and made affordable for everyone. Some sentences are a little long. They read better and have more impact when you split them. A bunch of ... challenges : this is quite informal writting, not really suitable here in your post. Better to say a : number of/ a few. A bunch of flowers/ a bunch of keys : this is perfectly fine.