What is sea level rise? (with Dr. Renee Colli...

Question and Response #76 You asked… so we answered. What do carbon chains have to do with Greek words? How do MRIs make “3D pixels”? Is that pool smell actually chlorine? And wait… are birds blue, or is that just a trick of the light? This episode is a rapid-fire round of your q ...  Show more

#235 You’ve seen it a hundred times… but how does it actually work? Why do diapers change color when they’re wet? What kind of chemistry is happening in there? And how does something as simple as pee trigger such a dramatic color shift? Let’s talk acids, bases, color, and one sur ...  Show more

In the first episode of a three-part series, environmental reporter Barbara Moran is on Cape Cod to find out why the crystal clear water there is turning “pea-soup green”—and how communities are scrambling to clean it up. For more information, read WBUR’s coverage of the efforts ...  Show more

All aboard the Nathaniel B. Palmer, a research vessel making its way through the waters of West Antarctica. Journalist Sofia Moutinho is joining a team of chemists trying to find out how glacial melting is changing ocean chemistry—and what those changes might mean for the global ...  Show more

Cape Cod communities are facing an expensive mandate to clean up their wastewater. Urine diversion or “pee-cycling” could be a cost-effective pollution solution. In the third and final installment of our three-part Fascination series about Cape Cod’s “yellow tide,” environmental ...  Show more

Why is it so hard to get a picture of the Milky Way? How much of our galaxy have we mapped? What the heck is a "barred spiral" and what does that have to do with our core? I discuss these questions and more in today's Ask a Spaceman!