Nineteen — the edge of youth

19 is the age at which many musical legends released their first hits. Jimi Hendrix, Janis Joplin, Amy Winehouse — all were noticed at 19. The last teenage year is full of creative explosion.

In 1920, the 19th Amendment to the US Constitution granted women the right to vote. This was the result of over 70 years of struggle by suffragettes and changed the political landscape of the country.

Potassium (K) — the 19th element of the periodic table, vital for the functioning of the nervous system and heart. Without potassium, transmission of nerve impulses is impossible — it regulates every heartbeat.