Happy 20th Birthday Wikipedia! 

Everybody’s favourite research page, Wikipedia, turned 20 on Friday 15 January. What started as an ambitious idea to create a free encyclopaedia, written by volunteers for everyone in the world, has become the largest collection of open knowledge in history. Overall, Wikipedia comprises more than 55 million articles, attracting 1.7 billion unique visitors per month and in January 2021, it was ranked as one of the 15 most visited websites.