NATURE: "ATTENBOROUGH'S LIFE STORIES"
PBS, 8:00 p.m. ET
Part 3 of 3. This hour concludes Sir David Attenborough's three-part career overview, and is even more impressive and emotion-stirring than the others. It's called Our Fragile Planet, and Attenborough takes the time - the entire hour - to reflect on the changes he's witnessed in the natural world, and in his own way of covering and relating to it, in the past 60-plus years as TV's finest nature host. The good news: Even with species going extinct and the polar ice melting, Attenborough finds cause to be hopeful. How inspiring. Truly. Check local listings.