[dmckeon]

Nice article, but note that the site's operator is "on pause in 2017", and the video appears to pre-date the damage sustained by the SS Palo Alto during winter storms of January, 2017.

https://www.washingtonpost.com/news/morning-mix/wp/2017/01/2...

For more concrete fun, and interesting material sciences challenges, see what floats civil engineering students' boats: http://www.asce.org/event/2017/concrete-canoe/