Caroline Mortimer wrote about ninjas:

• Tourism to Japan is increasing, and with it demand for ninja shows.
• But performance squads are reporting difficulties in finding ninja candidates.
• Instructors say that there are too many other career tracks for potential recruits. Japan’s ageing society also constricts supply.
• To be a good ninja one must be proficient in combat, stealth, acrobats, and, of course, skilled with throwing stars and swords.

Read more on Independent.

Via: Marginal Revolution