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.

It’s time for our seasonal weather show with our friends from the National Weather Service in Sacramento. And joining us to talk about it will be Michelle Mead and Brooke Bingaman from the NWS to tell us about a really important topic – being ready for disasters, natural or otherwise.

Blue Dot 30: For The Love Of Spock

Sep 22, 2016

This week our guest is Adam Nimoy. His recent film For the Love of Spock recounts his father Leonard’s famous Star Trek character but also provides a revealing look at the man, the actor and most importantly, the father of the director.

This week we look at the universe on the grandest scale with the James Webb Space Telescope, it’s scheduled for launch in 2018. We will talk about it with Bonnie Meinke from the Space Telescope Science Institute. Then we will hear from our social media correspondent, Kacey Gardner. She spoke with NASA’s Courtney O’Connor, she is responsible for the social media presence of the Juno spacecraft on Twitter.

The skies will darken, the birds will quiet and crickets will start the daytime. It all happens next August — it’s the Great American Eclipse, and this week on Blue Dot we have Dr. Tyler Nordgren to tell us all about it.

This week we talk with Kenneth Williford, the deputy project scientist for the Mars 2020 Rover. He's an expert on where biology, geology, and chemistry collide to inform the search for evidence of ancient microbial life in rocks. We also chat with graphic design artist Rachel Ignotofsky about her new book, Women in Science. This illustrated guide profiles 50 women in STEM fields, from ancient times until the present, who have shaped our world.

This week on Blue Dot we talk with award-winning NASA scientist, Fiona Harrison. She is an astrophysicist and chairperson at CalTech as well as Principal Investigator for the Nuclear Spectroscopic Telescope Array — our premier orbiting X-Ray observatory better known as NuStar. We also take a sneak peak at next week's interview with Kenneth Williford - who shares an exciting story of a recent development in his lab at JPL. Finally, we cap it all off with some audio captured over the weekend by Nolan and Dave at last weekend's Dark Sky Festival in Lassen Volcanic National Park.

This week on Blue Dot, Sarah Bohannon interviews Emily Graslie - host of the YouTube science series The Brain Scoop, and Dave interviews Nicholas van der Elst about how gravity is unlocking the secrets of the San Andreas Fault.

Blue Dot 24: The Lassen Dark Sky Festival

Aug 4, 2016

This week on Blue Dot we introduce co-host/producer Nolan Ford, and talk about the dark night sky at Lassen Volcanic National Park. Every year in August, around the time of the Perseid Meteor Shower, the park hosts the Lassen Dark Sky Festival. This year’s event takes place Friday, August 12th through Sunday, August 14th. On today's show we speak with some of the festival's star participants, and learn why "half the park is after dark."

Gross Science

On today's Blue Dot (Matt's last one), Bill Patzert, NASA Oceanographer and climatologist gives us the scoop on the state of our warming oceans, and what it's doing to our climate. We're also rolling out two new recurring features.

The first is "Science on the Tube," wherein Dave and his correspondents speak with folks making science videos on the Internet. This week it's Anna Rothschild of the PBS Digital Studios show Gross Science.

You'll also hear the first installment of "Blue Dot Goes to the Cinema." When a movie comes out that piques the interest of science geeks everywhere, Dave will give his critique and rating — out of four Blue Dots.


This week, we look at the ice sheets of Antarctica. Like so much of the world's ice, a lot of it is melting away and shrinking. But there are certain places in Antarctica that the ice is actually increasing. How? Why? Better ask a scientist.  

Or how about three? Son Nghiem, Eric Larour and Ala Khazendar give us the scoop on how scientists gather this crucial data, and what it's telling them about our changing climate.