By Andrew Craig Something that can cure cancer and clean our oceans? Biotech sounds too good to be true, but some things really are just like magic, writes Andrew Craig In the last century, technology has transformed the human experience across the world and lifted several billion people out of poverty. This has been super-charged in recent decades by the arrival of the internet, smart phones, AI and machine learning, and created trillion-plus dollar companies and household names like Apple, Amazon, Google and Microsoft. Tech has also been the underlying driver of US shares, having delivered a…