How to grasp the development trend of an academic field in the shortest time?

In bioengineering, such as Huada in China, ancient creatures can be revived through DNA technology, and Japanese have also made a breakthrough in cancer. 30% of cancers can be cured. The scientific community has been saying that 90% of people may be unemployed in 2040, and it is a trend that most jobs will be replaced by machines. It's only a matter of time! Playing Go and voice chat are only very elementary things. The future AI will be even more horrible. The energy crisis has always been mentioned. Oil is non-renewable. In terms of automobiles, most enterprises are studying charging technology, while Japan directly begins to study hydrogen technology. You can run 650 kilometers in 3 minutes, and the most important thing is that there is no pollution problem.