Coronavirus was declared a Public Health Emergency of International Concern by the World Health Organization (WHO).
Researchers identified the earliest known prehistoric ancestor of humans.
South Korea's first launch vehicle successfully reached orbit for the first time.
Justin Bieber reached one million followers on Twitter.
The US embassy in Kabul, Afghanistan, closed due to increasing security concerns.
Varig Flight 967 disappeared thirty minutes after taking off from Tokyo.
Over 321,000 people attended Winston Churchill's funeral to say goodbye.
Patsy Cline released her single 'I Fall to Pieces.'
A three-day-long ''dense smog" rolled through London.
White supremacist terrorists bombed Martin Luther King Jr's home.
Mahatma Gandhi was assassinated.
Adolf Hitler was named Chancellor of Germany.
Silent romance comedy ''City Lights" by Charlie Chaplin premiered at the Los Angeles Theater.
Captain James Cook reached a record 1,130 miles from the South Pole.
