At the nanoscale, our intuitions for what makes a good engineering solution and what not quickly break down - turns out everything is a lot less rigid and a lot more sticky than you'd think. The latest episode of the Robots podcast interviews Richard Jones, Professor of Physics at the University of Sheffield in the UK. Jones specializes on Soft Machines - think the Fantastic Voyage's submarine cruising in your blood stream. For a fascinating insight into a world which blurs the boundaries between biology and machines: Where rigid body dynamics is replaced by constantly reforming and mutable structures, where interactions are dominated by Brownian motion, and where motors are built from DNA and logic gates from protein molecules, tune in!