Shankar Vedantam is the host and creator of Hidden Brain. The Hidden Brain podcast receives more than three million downloads per week. The Hidden Brain radio show is distributed by NPR and featured on nearly 400 public radio stations around the United States.
NPR's Michel Martin speaks with former U.S. Ambassador to Ukraine John Herbst about how this latest round of U.S. aid will affect the situation in Ukraine — on and off the battlefield with Russia.
Genetic researchers and historians say the DNA of 27 people who were enslaved in Frederick, Md., before the Civil War indicates they have about 42,000 living relatives.