C-Crete, a startup company that makes a nano-engineered cement, has won $120,000 in the school’s Entrepreneurship Competition. C-Crete’s cement is reportedly stronger than any extant cement, and reduces CO2 emissions. Runners-up included makers of a nano-engineered insulin chewing gum and a silent alarm clock that was not nano-engineered.

The MIT $100K Entrepreneurship Competition has been conducted annually since 1989, giving money to student entrepreneurs. Past winners have included Akamai, the web acceleration company, PopSci Invention Award winner Levant Power, and Harmonix, makers of Rock Band.