This film about Seabiscuit's unlikely career illuminates the precarious economic conditions that defined America in the 1930s and explores the behind-the-scenes world of thoroughbred racing. Scott Glenn narrates.

Tuesday at 8:00 p.m.

Wednesday on OETA, Nature follows David Attenborough as he investigates a giant Jurassic sea monster, NOVA uncovers new clues surrounding the mystery of woolly mammoths, and Secrets of the Dead explores the remarkable bronze artifacts of an ancient Chinese civilization.

Starting at 7:00 p.m.

Tulsa Race Massacre: 100 Years Later

Home to the successful and historic Black Wall Street, the Greenwood District lost over 300 citizens to the Tulsa Race Massacre of 1921. The tragedy was kept a secret for 75 years. Greenwood continues to suffer from redlining policies and the construction of a highway which perpetuated the destruction of the community. Tulsa Race Massacre: 100 Years Later blends historical accounts of the massacre and the art of local creatives to paint a full picture of Greenwood-from the past, present and aspirations of a thriving future.

Thursday at 7:00 p.m.

Lawrence Welk - Milestones & Memories

More than 40 stars from The Lawrence Welk Show sing, dance and play their hearts out in a once-in-a-lifetime reunion concert, taped Labor Day weekend 2000 at the Champagne Theater in Branson, Missouri. Through the performance of more than 30 beloved songs, The Welk Musical Family recollects their career highlights and special moments together.

Saturday at 7:00 p.m.