A mission scientist with NASA's Kepler Space Telescope, Natalie Batalha hunts for exoplanets — Earth-sized planets beyond our solar system that might harbor life. She speaks about unexpected connections between things like love and dark energy, science and gratitude, and how "exploring the heavens" brings the beauty of the cosmos and the exuberance of scientific discovery closer to us all.

Krista Tippett's unedited interview with Kwame Anthony Appiah was recorded in 2011 and is included in our show, "Kwame Anthony Appiah — Sidling Up to Difference." See more at http://www.onbeing.org/program/sidling-difference/175

How can unimaginable social change happen in a world of strangers? Kwame Anthony Appiah is a philosopher who studies ethics and his parents' marriage helped inspire the movie "Guess Who's Coming to Dinner." In a tense moment in American life, he has refreshing advice on simply living with difference.

Oceanographer Sylvia Earle has done something no one else has — walked solo on the bottom of the sea, under a quarter mile of water. She tells what she saw — and what she has learned — about the giant living system that is the ocean.

Sylvia Earle has done something no one else has — walked solo on the bottom of the sea, under a quarter mile of water. She tells what she saw — and what she has learned — about the giant living system that is the ocean. And she explains why seeing a shark is a sign for hope.

Krista Tippett interviewed geologist David R. Montgomery on July 3, 2013. This interview is included in the show 'Reading the Rocks.' Download the mp3 of the produced show at onbeing.org.

The push and pull between religion and science has shaped advances in geology from the beginning. David Montgomery set out to debunk Noah’s Flood; instead he discovered this biblical story was the plate tectonics of its day. He tells us how the evolution of landscapes and geological processes shape ecology and humanity. And, how we should read rocks for the stories they tell about who we are and where we came from.

Krista Tippett spoke with Christian ethicist David P. Gushee and abortion-rights activist Frances Kissling on September 26, 2012 in front of a live, public audience at the University of Minnesota's Humphrey School of Public Affairs in Minneapolis, MN.

No issue is more intractable than abortion. Or is it? Most Americans fall somewhere between the absolute poles of “pro-life” and “pro-choice.” A Christian ethicist who advocates a "consistent ethic of life" and an abortion-rights activist reveal what they admire in the other side and discuss what’s really at stake in this debate.

A kind of archeologist of the human voice, singer and composer Meredith Monk says that "the voice could be like the body" — flexible and fluid with practice. Through music as through meditation, the longtime Buddhist practitioner pushes the boundaries of what we can do without words.