Blue Dot

Fridays at 10 a.m. and Sundays at 3 p.m.

Each week Blue Dot takes you to curiosities across our universe. Featuring interviews with leading scientists, authors, filmmakers and journalists from around the world, Blue Dot examines our home from a planetary perspective. Whether it’s a discussion about our life-giving oceans, the imperiled climate systems, the depths of space, or how a rock guitar works, Blue Dot is an adventure of discovery.

Hosted by Dave Schlom, and co-produced by North State Public Radio, Blue Dot digs deep into conversations about earth and space. For the past 12 years, Schlom has adorned the airwaves with his warm, relaxed style. His extensive scientific and journalistic background and his gift for engaging natural and thought-inducing conversations make Blue Dot a program you don’t want to miss.

Original Theme Music by Matt Shilts, Engineer and Producer Matt Fidler, Associate Producer Ellie Johnson.

Blue Dot 08: Return To The Moon

Mar 24, 2016

This week on Blue Dot, we talk to Dr. Jennifer Heldmann about the surface, water, and rocket fuel on the moon, and how it might become a staging area to send humans to Mars. We hear from Dr. Pamela Clark about the versatile tiny satellites we’re sending to space — in particular, the ones that will go study the moon.

We also talk with Frank Sinatra biographer James Kaplan about a song that has a very Lunar history. 

Blue Dot 07: Engineers Who Get It Done

Mar 17, 2016
Chris Gunn / NASA

Engineers figure out how to implement cool science — things like shooting a rocket to the moon, deploying the sky crane maneuver, sending probes all over the solar system, building space telescopes and much more. On Blue Dot today, we hear from Riley Duren, principal engineer and chief systems engineer for the Earth Science Directorate at NASA's Jet Propulsion Laboratory, about some of the projects he's been a part of and the issues and challenges that arise making that stuff exist, and making it work.

We also check in with Adam Steltzner, the NASA engineer who figured out how to get the Mars Curiosity Rover safely on the surface of Mars. 

Blue Dot 06: Exploring Mars

Mar 10, 2016

Today on Blue Dot, we talk with three scientists who play an integral role in the exploration of the Red Planet. Adam Steltzner, a rock star of a NASA engineer, leads the rovers from space to the Martian surface. Ashwin Vasavada is the project scientist for the Curiosity team, which means he coordinates all kinds of brilliant people to facilitate the actual scientific goals of the rover. We also talk to Mike Seibert, a software engineer who drives the rover from Earth (pretty good gig, huh?)

Blue Dot 05: Physics Girl

Mar 3, 2016
UC San Diego

MIT grad, former astronomy researcher and Hawaii native Dianna Cowern also carries another mantle: Physics Girl. Her YouTube channel answers science questions in a fun, engaging way, and she's recently began creating content for PBS Digital Studios. 

We talk with Dianna about fighting through school struggles, being part of the YouTube renaissance, and what it's like to have "Girl" in your title. 

Blue Dot 04: El Niño 2016

Feb 25, 2016

  What exactly is El Niño and what does it have to do with the warming planet? How can the Jason satellites help us understand all that? What is Josh Willis's favorite movie? For all that and much more, we talked with Josh Willis, an oceanographer at NASA's Jet Propulsion Laboratory. 


Scientists have detected what may be remembered as the biggest discovery in our lifetimes: gravitational waves. The minute but unequivocal readings are further confirmation of Einstein's Theory of General Relativity, and serve to deepen our scientific knowledge of the way the universe ticks. 

Blue Dot 02: Phil Plait, Bad Astronomer

Feb 11, 2016
Bad Astronomy


Phil Plait pens Bad Astronomy for Slate and is an all-around science guy. He hosted the astronomy season of Crash Course on YouTube and regularly takes on pseudo-science.  


Amy Mainzer knows a lot about infrared. She was deputy project scientist for the Wide-filed Infrared Survey Explorer (WISE), which used infrared to study the entire sky. She's now principle investigator on NEOWISE, a project that uses WISE images to study asteroids and comets. Amy Mainzer joined us for the inaugural episode of “Blue Dot.”


This transcript has been lightly edited

Climate change is one of the most daunting problems facing our global civilization. And while world leaders struggle to find solutions, scientists continue to compile the compelling evidence of a planet being warmed by human activity. Climate scientists are people too, and they have to talk to their friends and family members who may still be skeptical or ambivalent about what can seem like an overwhelming issue.

Macmillan Publishers

Bill Nye has been communicating science for decades. His hit show "Bill Nye the Science Guy" educated millenials (and their parents) in the '90s, and since then he's been spreading the good word: science rules. His new book is "Unstoppable: Harnessing Science to Change the World," and it aims to do just that: encourage people to address the changing climate.