I just finished listening to a talk by GinkgoBioworks' Reshma Shetty and Barry Canton at the O'Reilly Emerging Tech Conference. Though talk may be the wrong word--Shetty and Canton handed out bacterial cultures along with DNA strips and kits that audience members could use to turn the bacteria red, to make it glow in the dark, or to make it smell like bananas (but not all three together.) In a couple of days, our engineered bacteria--which don't pose any risk to people, health or otherwise--will be ready.