Arts & Life

One of the first things Michelle Obama did as first lady was to dig up part of the beautifully manicured South Lawn of the White House and plant a vegetable garden. The garden was just one of Obama's many efforts to encourage Americans to eat nutritious food and live healthier lives. Her latest project, a book called American Grown, is a diary of that garden through the seasons and a portrait of gardening in America, past and present.

As part of a new tech segment, we're occasionally going to be looking at a concept, invention or tool that's altered the way the world works. To start things off, we asked Doug Wilson, director of Linotype: The Film, to tell us about — what else? — the linotype.