Native American spiritual traditions are incredibly diverse — there are over 500 distinct indigenous tribes with different beliefs.

The Siege of Troy is a legendary conflict described in Greek epic poetry.

Calligraphy is considered one of the highest art forms in East Asian, Middle Eastern, and European medieval traditions.

Operation PBSUCCESS involved CIA actions in Guatemala in 1954.

Musical chords produce emotional responses partly because of learned cultural associations and partly because of acoustic properties.

The first graphic novel is often considered 'A Contract With God' by Will Eisner, published in 1978.

Particles can exist in multiple states until observed.

The fastest Olympic swim races are completed in under 25 seconds.

The Olympic flame tradition was revived at the 1928 Amsterdam Games; the torch relay began at the 1936 Berlin Olympics.