In Aboriginal Australian mythology, the Dreamtime is not a historical past but an ongoing spiritual dimension.

The fastest tennis serve ever recorded was by John Isner at 253 km/h (157.2 mph).

Fact #4458 · Culture

The fastest recorded tennis serve exceeded 150 miles per hour.

Fact #932 · Culture

The 16th Amendment authorized a federal income tax.

Fact #1124 · Culture

The mathematical constant tau (τ = 2π) is championed by some as more natural than pi for describing circles.

Fact #5097 · Culture

Particles can exist in multiple states until observed.

Fact #2194 · Culture

Van Gogh sold only one painting during his lifetime.

Fact #3179 · Culture

The marathon race commemorates a legendary run in ancient Greece.

Fact #926 · Culture

Music can influence mood and emotional state.

Fact #956 · Culture