In a real-world experiment, two researchers paid for a gender-neutral STEM career ad to run on Facebook, Instagram and Twitter, as well as through Google’s network for distributing ads across different sites. In each case the platform’s ad algorithm optimized the ad for the most views, which meant that men saw the ad about 20% more often than women did. ISR’s Scott Page says this kind of research, which “couldn’t have been done 20 years ago,” is an exciting advance in promoting diversity in the sciences in an age of digital job advertising.