After the Fact

Stat: 7. On average, Americans are waiting nearly seven years longer to get married than they did in 1968, according to the U.S. Census Bureau. Story: Does putting off marriage mean people no longer want to say "I do?" To learn more about this trend, we spoke to couples who are waiting to wed—in the first installment of our four-part series on today's American family. Marriage historian Stephanie Coontz also offers insights.

Story: The American family is changing. We explore how over the next four episodes, taking you into the lives of American families through conversations at kitchen tables, in workplaces, and even in the family car on the way to after-school pickup. Host Dan LeDuc also speaks with researchers about the data and trends on these informative and inspiring stories.

Stat: 20 percent. The share of Americans who find the concept of machines doing most human jobs in the future extremely realistic. Story: Will robots take our jobs? They'll need a key human skill first—the ability to think. To find out just how near such a future is, we visited Ashley J. Llorens, chief of the Intelligent Systems Center at the Johns Hopkins University Applied Physics Laboratory. There, researchers are bridging the gap between machines programmed by humans and those that can teach themselves.

Stat: 48%—Almost half the members of Generation Z—age 22 or younger—are racial or ethnic minorities. Story: Step aside, Millennials. There's a new, younger group out there: Generation Z, which includes anyone born after 1996. To learn more about this generation, we sat down with Kim Parker, director of social trends research at the Pew Research Center. Listen in to hear about Gen Z's social, cultural, and political inclinations, and what this might mean for the future.

Stat: 844 million. The amount of people worldwide who lack even a basic drinking-water service, according to the World Health Organization. Story: For many of us, it can be easy to take water for granted. Turn on the tap and it's there. But today, the world faces a tipping point, with water security—having sufficient access to safe water for our daily lives—at risk. Listen in as our guest, Sandra Postel, discusses the challenges and shares options for fixing our broken water cycle.

Stat: 40%—Across Africa, the number of giraffes has declined by 40 percent since 1979. Story: Giraffes are dying, and experts are trying to figure out why. Host Dan LeDuc speaks to two giraffe experts, ecologist David O'Connor and researcher Jenna Stacy-Dawes of the San Diego Zoo, who are trying to learn more about these mysterious animals and help giraffes rebound.

Stat: 1919—the year President Woodrow Wilson signed a bill establishing the Grand Canyon as a national park. Story: The Grand Canyon was dedicated as a national park 100 years ago. This anniversary commemorates the canyon's legacy, but it has been around longer than that—at least 6 million years. Our host explores the beauty of this natural wonder with Wayne Ranney, a geologist who has spent his career studying the canyon. Listen in for a historical journey through this iconic landscape.

Stat: 100. More than half of children born in developed countries today will reach the age of 100. Story: If you knew you would live to 100, what would you do differently? Increasing longevity will expand and shift the traditional phases of life, according to London Business School professor Andrew Scott. In his conversation with host Dan LeDuc, he describes the challenges and opportunities facing individuals and society as life expectancy continues to rise.

Stat: 57 percent of social media news consumers expect what they see there to be largely inaccurate. Story: The rise of deepfakes—realistic fake videos made with artificial intelligence software—is beginning to make sorting fact from fiction even harder. In an interview with Dartmouth Professor Hany Farid, a digital forensics expert who advises governments and the media on how to meet this growing threat, we discuss the implications for people and societies when we can't necessarily believe what we see.

Stat: 50. The percentage of American children today who will grow up to earn more than their parents did. Story: That's down from over 90 percent for children born in the 1940s and its says a lot about the current state of the American Dream. John Friedman, who's a leader of Opportunity Insights which is working to help people get out of poverty, says the opportunity to move up the economic ladder depends a lot on where you live and even who your kindergarten teacher was. He speaks with host Dan LeDuc about what factors can improve kids' chances of success.