In 100 Words (or less)

With upwards of 500 hours of video uploaded  every minute , there is the question of exhaustion - Will YouTube ever run out of Video IDs?  A unique sequence of 11 random characters identifies a video. This compact and readable format has a deadly weapon, however. It harnesses the power of higher-order number systems . YouTube uses the base 64 number system(0-9, a-z, A-Z, - and _). So, Youtube can store 64^11 videos, enough for  every  human to upload a video every minute  for 18,000 years .  While we  technicall y can exhaust IDs, the solution is simple - just add another character !

Emoji . You either 👍 them or 👎 them, but nobody can deny that they are everywhere, and they are revolutionising communication .  92%  of people online use them. In 2015, 😂 became Oxford Dictionaries’ Word of the Year. But what  are  they? Emoji are visual representations of emotions, feelings, or symbols, which transcend boundaries, cultures, and time. Digitally, they represent a unique Unicode number, attained after passing their criteria. They can add emphasis and personality to your words, but its overuse can make you come off insensitive, childish, or robotic. They might seem ubiquitous, but do have their time and place.