More than 30,000 runners are registered to take part in this year’s Boston Marathon, and nearly 14,000 of them are women. Fifty years ago, Kathrine Switzer was the first woman to register and officially run the race. Don Dahler reports on how Switzer changed the definition of strength and stamina in a male-dominated field. Source

“The American Spirit: Who We Are and What We Stand For” is a collection of historian David McCullough’s speeches over the past 28 years. McCullough, who’s earned the Presidential Medal of Freedom and two Pulitzer Prizes, joins “CBS This Morning” to discuss the importance of knowing our historical past. Source

A nine-minute workout could be the prescription to building a stronger, healthier body. Dr. Jordan Metzl, sports medicine physician at New York’s Hospital for Special Surgery, joins “CBS This Morning” with more on the benefits of the workout. Source

Brazil has become the second country in the world to top 400,000 COVID-19 deaths, losing another 100,000 lives in just one month. April was the country’s deadliest month of the pandemic. Source

From the 75th anniversary of Doolittle’s Raid on Tokyo to Earth Day, “Sunday Morning” takes a look at some notable events of the week ahead. Jane Pauley reports. Source

Just over half a mile from Rome’s Trevi Fountain is Villa Aurora. Built in 1570, it is currently presided over by a princess born in San Antonio, Texas. The former Rita Jenrette, now Rita Boncompagni Ludovisi, Principessa di Piombino, gives Mo Rocca a tour of her art-filled home, and of her life, which wound from her marriage to a Congressman whose career ended in scandal, to posing in Playboy, to her marriage to an Italian aristocrat. Source

Attack “has the hallmarks of nation-state activity” and was designed to undermine trust in the vaccine, experts say. Source

The Food and Drug Administration has proposed banning menthol cigarettes and flavored cigars once and for all. Ben Tracy explains why. Source

Five suspects have been arrested in the February shooting attack and robbery of a man who was walking Lady Gaga’s dogs. Source

In this web exclusive, singer Ricky Martin admits that, despite reveling in euphoric shows (“They must be really loud!”), he finds a cleansing spirituality through a daily practice of retreating into silence. He also discusses his “favorite project in life”: becoming a father. Source