On 7 May 2008, Fry gave a speech as part of a series of BBC lectures on the future of public service broadcasting in the United Kingdom, which he later recorded for a podcast. His six-part travel series "Stephen Fry in America" began on BBC One in October 2008, and saw him travel to each of the 50 US states. In the same year, he narrated the nature documentaries "Spectacled Bears: Shadow of the Forest" for the BBC "Natural World" series. In the 2009 television series "Last Chance to See", Fry and zoologist Mark Carwardine sought out endangered species, some of which had been featured in Douglas Adams' and Carwardine's 1990 book and radio series of the same name.