The freeman foundation. By judy and Peter Blum Kovler foundation; pursuing solutions for americas neglected needs. And by contributions to this pbs station from viewer you. Thank you. [music] this is bbc world news america. Joe biden brings the Democratic National convention to an end with promise to bring america back into the light if he wins the race f the white house. We take a look back at this wes convention. The u. S. Postmaster general tells the Senate Committee that ballots in novembers president ial election will be delivered sec tely and one. A series of massive wildfires in northern and Central California force thousands from their homes as emergency offictols struggle keep the blazes under control. [music] for all of you watching on pbs andhe around globe, welcome to bbc world news. Joe biden gave the bgest spee of his political career last night, defining this election as a battle between the lightsnd darkn as he accepted the democratic partys nomination to challen donald