Infinite banking, although it has been around for at least a century, didn't become a popular concept until 2000. (thecollegeinvestor.com)
That is all that remains in what will, perhaps, go down as the most unpredictable American presidential election in at least a century. (blog.politics.ox.ac.uk)
The notion that cancer and immunity are closely connected and that a person's immune defenses can be turned against cancer is at least a century old. (warrenalpert.org)