Synthetic biology will change the world in three key areas: medicine, food, and the environment.
How pandemics might be wiped out by engineering immunity to deadly diseases on demand before they have a chance to take hold. (Alternatively, how pandemics might be created by engineering new diseases against which we have no defense.)
Forget waiting your turn on the donor list: we'll be able to print new vital, life-sustaining organs from scratch instead of relying on unpredictable supply.
When we have the ability to resurrect extinct species, will we possess the wisdom to prudently decide what lives again and what stays dead forever?
How meat can be grown from cells in labs without slaughtering animals and consuming the resources necessary to sustain them.