Last week I talked on interstellar colonization at a NYC design school. Coincidentally, just before I taped a short interview on the same subject for the Are We Alone? radio show. I start about minute 33, and go for about six minutes.
I expected cosmic trash was going to be similar to trailer trash in space. Turns out it's literal trash, like Voyager and the plot-line to Star Trek I. Only this premise is not supported at all clearly. I'm a sucker for the A/V so I tuned in, but I'd recommend skipping this one.
I'm enjoying all this Hanson audio. If there's some you haven't posted yet, can you post it too?
Robin's segment starts in minute 34.