Pandemics require individuals to contribute to the greater good. Behavioural economist, Stephen Whyte says that it is possible to 'nudge' people towards actions that improve their lives. Staying at home, social- distancing and downloading the COVIDSafe app are pro-social behaviours we can implement ourselves. But how do we incentivise big companies to put the necessary resources into finding a vaccine? Joshua Gans, author of Economics in the Age of COVID-19 explains.