The classic t-shirt has been a popular design for 30 years, but where did the blank-eyed, zonked out smiley face actually come from? And why was it the subject of legal action?

GitHub is where people build software. More than 150 million people use GitHub to discover, fork, and contribute to over 420 million projects.

Their attempt at a modern and progressive rebrand stands in contrast to Jaguar, which retired its jaguar logo last year for a controversial all-lowercase sans-serif logo.