Free plants, the possibility of free food and introductions to a 21st-century astronaut and a 19th-century blacksmith are among upcoming events.
* Astronaut chat: The Tennessee Aquarium will offer a Facebook Live meet-up at 7:30 p.m. April 7 with retired NASA astronaut Cmdr. John B. Herrington, a trailblazer featured in the new Imax film "Into America's Wild 3D."
An enrolled member of the Chickasaw Nation, Herrington became the first American Indian to walk in space in 2002 as part of mission STS-113 aboard space shuttle Endeavour. Since retiring from NASA in 2005, he has made it his mission to inspire young people toward a love of the outdoors and science-related career paths.
The free event will be hosted on the Tennessee Aquarium's Facebook page. There will be a comment feature to submit questions.