Matt and Sean talk about NASA’s use of 3D printing to improve propulsion research, and more from the mailbag.

Matt recently interviewed Matt Risinger from The Build Show about why American houses suck. The building codes and techniques used in the US are lagging way behind other areas of the world. The two Matts talk about some of the why of that, but also what we wish we would see more of.

Matt and Sean play a little catch up after some breaks. Matt talks about his experience at Fully Charged Live in Vancouver, the rise of CO2 heat pumps, and solar power’s incredible climb to dominance.

Matt and Sean catch up on new home tech, Matt moving into his new net zero home, and what feels right (or wrong) about it.

Matt & Sean talk about wave energy generators and how they could play an important role in the future of energy production.

Matt had a chance to interview Paul Gradl, principle engineer at NASA’s Marshall Space Flight Center, about the advances they’ve made with 3D printing rockets. Yes, Rockets. What this unlocks is kind of incredible.

Matt and Sean revisit your questions about robotic surgery, house cooling systems, waste reuse and more.

Matt and Sean talk about waste recycling projects, profit, and the mailbag.

Matt and Sean talk about NASA’s nickel hydrogen batteries uses at home, some unpleasantness at Matt’s new home, and more from the mailbag.

Matt has a fun conversation with Adam Sachs, the CEO and co-founder of Vicarious Surgical, who is developing a tiny, surgical robot that could radically change how surgery is performed.