Has Genetics really revolutionised Agriculture and Medicine yet?

On the 50th anniversary of the announcement of DNA, a report on whether genetic engineering has delivered the promised revolution in medicine and agriculture, particularly in the developing world, or has it just made big companies richer? What's the big deal about sequencing the neurospera mold genome? How do you stop asteroids crashing into the Earth? In Iraq, magnetic technique is being used to search for ancient hero Gilgamesh's burial site.