Hemp conversion to graphene and diamond. Smart carbon capture?

https://youtube.com/watch?v=AWwQGb5KWXMHemp has been celebrated and vilified in equal measure over the centuries. It has fantastic properties for textiles and ropes, but it comes from the cannabis plant, so it arouses deep suspicion among some policymakers. What is unarguable though, is that it is an extremely fast growing plant that stores a large amount of carbon. [...]