Lizards & Snakes: Alive! The Times’s Anahad O’Connor tours a new exhibit at the American Museum of Natural History.

The Billy Goat Trail: A travel segment about a rigorous scramble along a boulder-strewn path outside Washington, DC, a favorite hike of New York Times reporter Elisabeth Bumiller.

Finite Arlington: New York Times science reporter Andrew C. Revkin, who moonlights as a musician in a folk-roots band, wrote a song about Arlington National Cemetery.

Christiane Nusslein-Volhard: A four-part conversation with the German biologist and Nobel Laureate, with science reporter Claudia Dreifus.

Alejandro Escovedo: A two-part profile and review by New York Times pop music critic Jon Pareles of the latest album by the Austin-based musician and songwriter Alejandro Escovedo. Part Two.

Two pieces from New Orleans, including one about a Carriage Driver who's rebuilding his home, and the challenges of rebuilding the city's Lower Ninth Ward. Sonya Kitchell: Profile of a 17 year old singer. Biloxi, MS: The cleanup and rebuilding of Biloxi. Les Paul: A profile of 90 year-old guitarist and inventor. Niles Eldredge: An interview and stroll in Central Park with paleontologist and curator of the Darwin exhibit at the American Museum of Natural History. Neil Young and Jonathan Demme: An interview by Times chief pop critic, Jon Pareles, at the SXSW Festival in Austin, Tex. Defending the Leech: An interview with an invertebrate zoologist who studies leeches.