Catalyst: NASA satellite images of our solar system

The latest generation of NASA satellites during its Lucy Mission captures new visions of Earth and fascinating objects in our solar system.

In this segment:

Don Johanson, PhD

Les Miserables 25th Anniversary Concert

Celebrate the legendary musical with a stellar cast. Staged by producer Cameron Mackintosh, the concert was filmed at London's O2 Arena.

Overcoming Anxiety, Depression, Trauma and Grief with Daniel Amen, M.D. and Tana Amen, R.N.

Dr. Daniel Amen and Tana Amen

Dr. Daniel Amen shows you how to tame your hidden dragons and help you feel happier, more positive and in control of your own emotions.

'Downton Abbey' returns to Arizona PBS

Downton Abbey season 1 cast

Return to the beginning of the phenomenon Feb. 27 (streaming) and March 7 (on air). After the Titanic goes down, the Crawley family and their household meet the new heir. All the drama, romance, scheming and triumph lie ahead.