By Doug Ward

Rajiv Jhangiani makes a case for free and open course materials in very personal terms.

By Doug Ward

One poster offers to explain the chemistry of the world’s most popular drug.

Another teases about the fatty acids that make T-shirts feel soft.

Still another promises secrets about the oils used in making the perfect chicken nugget.

None of them offers its secrets outright, though. And that’s just how Drew Vartia, a postdoctoral teaching fellow in the chemistry department, wants it.