Our presidential candidates have never been older. You can thank the Founding Fathers The U.S. Constitution requires a president to be 35 or older, but only a lower age limit exists. There has never been an upper one. Natalie Escobar
This portrait of Dolley Madison might be the first photo of a first lady The National Portrait Gallery in Washington, D.C., acquired the circa 1846 daguerreotype, which depicts Dolley Madison in her later years, at some point in her 70s. Alana Wise
Veterans remember their time in disaster relief operations As part of our StoryCorps Military Voices Initiative, we hear from two veterans who volunteer with disaster relief operations, Michael Davidson and Windy Barton. Scott Simon
Take a sneak peek into a legendary songwriter's creative process The Library of Congress has acquired the papers of Leslie Bricusse, the songwriter who gave us "Pure Imagination," "What Kind of Fool Am I?," "Goldfinger" and "Talk to the Animals." Bob Mondello
This July 4 marks 100 years since Caesar salad was invented in Tijuana The Caesar salad was invented at a hotel in Tijuana, Mexico, on July 4, 1924, to feed hungry American tourists. We've been enjoying it in various incarnations ever since. Neda Ulaby
The explosive history of fireworks, from ancient China to Revolutionary America Pyrotechnic amusements from sparklers to Roman candles have long been a staple of celebrations in the U.S. and beyond, helping to mark national holidays, sporting events and more. Joe Hernandez
'Morning Edition' listeners weigh in on their favorite passages from the Declaration of Independence NPR listeners talk about the passages in the Declaration of Independence that are most meaningful to them. Hosts
70 years ago, some Texan families joined an experiment that ushered in life with AC Air conditioning wasn't common in middle class homes until some Texas families decided to become study subjects in the 1950s. Audrey McGlinchy
On this July 4th week, we’re handing the mic to 4th graders for a history lesson One group was tasked with studying the Quartering Act of 1765. Their podcast was one of nearly 2,000 submitted to NPR’s Student Podcast Challenge. Hosts
Underground tours resume at Minnesota's oldest iron mine History buffs and tourists get a chance to go 2,300 feet underground to visit a historic mine in Minnesota. Daniel Kraker
