\n\tAdvertisement - Continue Reading Below\n\t\n\nSimon Isaacs noticed changes happening in U.S. households. Two million men are becoming stay-at-home dads. They're responsible for childcare and 52% are in charge of the grocery shopping. Yet Simon wondered why pregnancy newsletters were written exclusively to moms. Dads seemed just as invested. And these days, increasingly so. With this in mind, Simon launched the men's parenting site Fatherly in 2013. As the first parenting site focused on men, Fatherly has already doubled its subscribers. "It's a brave new world when it comes to parenting and work/life balance," says Simon. With such a widespread issue, Fatherly has tapped top experts in everything from pediatrics and economics to childhood brain development and children's literature. "Even Secretary of Education Arne Duncan and the White House have gotten behind the work we're doing," he explains.\n\tAdvertisement - Continue Reading Below\n\t\n\n "Being a father ignites a new relationship you have with the world.""Dads ask themselves, 'What is the legacy we'll leave our children?'" Just 14 years ago, the Toyota Prius changed the world as the hybrid that started it all. Over the next 14, Simon expects socially conscious businesses will continue to win with the next generation. Toyota Prius proudly profiles a new generation of innovators. Visit PopularMechanics.com/Inventionaries as we reveal what inspires them.