To trace the history of the twenty-first century so far is to trace a history of unaffordability and shortage. After years of refusing to build sufficient housing, America has a national housing crisis. After years of limiting immigration, we don’t have enough workers. Despite decades of being warned about the consequences of climate change, we haven’t built anything close to the clean-energy infrastructure we need. Ambitious public projects are finished late and over budget—if they are ever finished at all.

Space entrepreneur turned innovation pioneer Peter H. Diamandis and award-winning science writer Steven Kotler document how progress in artificial intelligence, robotics, digital manufacturing synthetic biology, and other exponentially growing technologies will enable us to make greater gains in the next two decades than we have in the previous 200 years.

America was once a country that did big things—we built the world’s greatest rail network, a vast electrical grid, interstate highways, abundant housing, the Social Security system, the Tennessee Valley Authority, and more. But today, even while facing a host of pressing challenges—a housing shortage, a climate crisis, a dilapidated infrastructure—we feel stuck, unable to move the needle. Why?

In Why We’re Polarized, Klein reveals the structural and psychological forces behind America’s descent into division and dysfunction. Neither a polemic nor a lament, this book offers a clear framework for understanding everything from Trump’s rise to the Democratic Party’s leftward shift to the politicization of everyday culture. America is polarized, first and foremost, by identity. Everyone engaged in American politics is engaged, at some level, in identity politics.

Over the course of the last four years, the American public looked on as the former president faced a series of daunting obstacles to return to the White House. The lingering cloud of January 6, a shadow effort within the Republican establishment to defeat him in the primary, multiple indictments, assassination attempts, and an 11th hour change of his opponent all threatened to derail his return to power at any moment.