What are the pros and cons of CRISPR-cas9

One of the major pros of crispr-cas9 is that it could potentially wipe-out many genetic diseases and could even be used to develop a successful cancer therapy.

The main con would be the ethics. In the future an individual could select their own desired traits for their offspring. The wealthy would have a larger advantage which could increase the social gap.

what subject is this

the cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.