Collaboration, whether between teachers and librarians or classrooms around the world, is fast becoming a crucial educational tool.

Educators have long cautioned students about posting damaging information online, but now it’s also becoming important to build a positive digital footprint. When should students start building their online persona? The earlier, the better.

Wikipedia provides Internet users with millions of articles on a broad range of topics, and commonly ranks first in search engines. But its reliability and credibility fall well short of the standards for a school paper. According to Wikipedia itself, “[W]hile some articles are of the highest quality of scholarship, others are admittedly complete rubbish. … use [Wikipedia] with an informed understanding of what it is and what it isn't.”

To help you develop such an understanding, we present 10 reasons you can't rely on information in Wikipedia.

On Aug. 8, 1963, robbers boarded the Royal Mail train and made off with 2.6 million pounds (equivalent to $50 million today). The crime took only 15 minutes and led to a nearly 40-year manhunt.