On this week’s Tech Nation, developing antidepressants along with a test so when you take them, you know they will work. Dr. Amit Etkin, the founder and CEO Alto Neuroscience, explains how looking at each patient’s underlying biology is essential. Then Sir Rory Collins, the Principal Investigator of the UK BioBank. With data from half a million people, it has served 30,000 scientists around the world, giving special support to young researchers and scientists in emergent countries.