Lilly Singh

Growing up, I was always creatively inclined, and when YouTube came about, it was like getting the perfect platform to showcase what I wanted. Personally, I was going through a dark phase in my life, and I decided to make videos and basically go by the adage, 'If you want to cheer up yourself, go cheer up someone else.'

In 1967, the world health community launched a global effort to eradicate smallpox. It took a coordinated, worldwide effort, required the commitment of every government, and cost $130 million dollars. By 1977, smallpox had disappeared.