In this edition, we’ll hear about a new technique to inject information into the brain of monkeys, with Kevin Mazurek and Marc Schieber, Neuron (00:00); how to convert yogurt waste into biofuels, with Lars Angenent, Joule (9:31); why should we eat a high-fiber diet, with Fredrik Bäckhed, Cell Host & Microbe (16:45); and how CRISPR holds promise for epigenetic therapies, with Hsin-Kai Liao, Cell (22:09).