Dave Davies

Every time the president of the United States travels, he's accompanied by a cadre of Secret Service agents. Sometimes seen wearing crisp suits, sunglasses and ear pieces, the agents charged with protecting the president present a striking visual. But Pulitzer Prize-winning Washington Post investigative reporter Carol Leonnig says the Secret Service itself is something of a mess.

SUZANNE SIMARD says trees are "social creatures" that communicate with each other in cooperative ways that hold lessons for humans too. Simard grew up in Canadian forests as a descendant of loggers before becoming a forestry ecologist. She's now a professor of forest ecology at the University of British Columbia. She explains her research on cooperation and symbiosis in the forest, and shares her personal story in the new memoir Finding the Mother Tree: Discovering the Wisdom of the Forest.

Yale professor Dr. Phillip Atiba Goff co-founded the Center for Policing Equity, which collects data on police behavior from 18,000 law enforcement agencies across the country.

Christopher Meloni spent 12 seasons on Law & Order: SVU before leaving the show in 2011. Now he's returning to the franchise, starring in Law & Order: Organized Crime. Originally broadcast April 2019.

New York Times reporter Jason DeParle says a provision in the new COVID relief package has the makings of a policy revolution — and would "roughly cut child poverty in half."

Journalist Alec MacGillis writes about Amazon's growing impact on American life in his new book, Fulfillment: Winning and Losing in One-Click America.

Scott Weidensaul has spent decades studying bird migration. "There is a tremendous solace in watching these natural rhythms play out again and again," he says. His new book is A World On the Wing.

Are robots coming for your job? New York Times tech columnist Kevin Roose says companies and governments are increasingly using automation and artificial intelligence to cut costs, transform workplaces and eliminate jobs — and more changes are coming.

Deborah Feldman talks about breaking away from her arranged marriage and the fundamentalist religious community she was raised in. Her 2012 memoir inspired the Netflix series 'Unorthodox.'

MIT professor Sherry Turkle was 27 when she learned that her estranged father had conducted psychological experiments on her when she was a child. She looks back on her childhood in a new memoir.