but before starting, rodolphe added a twist. he used crispr technology to enhance the bacteria used in the fermentation of milk. - we used it to build resistance in bacteria that make cheese and yogurt, to have better fermentations d better manufacturing of dairy products. - [kondwani] by vaccinating the cteria, his daircultures almostlways sueed which improves the process of making yogurt and cheese. processes like these, also make them healthier. - crispr has been a life changer and then also haopened tremendous avenues to provide a healthier and more sustainable food supply for humanity. - [kondwani] but the true revolutionary potential of crispr technology is just now starting to be realized. - other people caught on to using these molecular machines to actually cut dna, to do genome editing, not just in bacteria but in other organisms. by understanding what crispr is and how it works, scientists were able toevelop technologies to enable us to now change the world. - [kondwani] by 2050, the world population is expected to so

process and then used the lactose to solidify milk at nc state's plants and microbial biology lab, rodolphe's colleague, mary beth dallas, is facing this daunting prospect. - i manage this lab and i also do research on cassava. - [kondwani] also known as the yuca plant, cassava is the primary food staple collectively take in the excess carbon dioxide from the atmosphere, cooling the climate, and restoring balance to the world's ecosystem. (dramatic electronic music) - as i see it, gene editing is both a faster and more precise method for artificial selection. while it works in microbes and plants, how feasible is gene editing in our biologically complex organisms, like animals? i'm in davis, california to meet geneticist, alison van eenennaam. she's a pioneer in this fid. now i'm getting acquainted with her work. (cattle snorts) oh, no! - scientists tend to be problem solvers and wanna try and address problems using the best method they can, and my lab is trying to breed better cattle. - [kondwani] there are about 1 billion cattle on earth. that's a lot of animals to manage, but allison is ma