This U.S. capital sits on the Potomac River.
What is Washington, D.C.?
This is Earth's highest mountain measured from sea level.
What is Mount Everest?
This is the approximate number of bones in the fully-fused adult human skeleton.
What is 206?
This planet rotates on its side, with an axial tilt of roughly 98 degrees.
What is Uranus?
This is the year World War II came to an end.
What is 1945?
This Canadian capital sits at the meeting point of the Ottawa, Rideau, and Gatineau rivers.
What is Ottawa?
This Pacific Ocean trench contains the deepest known point in Earth's oceans, the Challenger Deep.
What is the Mariana Trench?
This is the largest organ of the human body by surface area and weight.
What is the skin?
This is the only planet in our solar system that spins in retrograde (opposite to its orbital direction).
What is Venus?
On this date in 1989, East German authorities announced border crossings could be used immediately, effectively bringing down the Berlin Wall.
What is November 9, 1989?
This purpose-built capital was chosen as a compromise between rivals Sydney and Melbourne.
What is Canberra?
This Chilean desert is considered the driest non-polar desert on Earth.
What is the Atacama Desert?
This internal organ can regenerate to nearly full function even after up to 70% of it is removed.
What is the liver?
This moon of Jupiter is the largest natural satellite in the entire solar system, bigger than the planet Mercury.
What is Ganymede?
This year saw the Treaty of Versailles signed, formally ending World War I.
What is 1919?
This Swiss capital sits on the Aare River, even though Zurich is the country's largest city.
What is Bern?
Unlike every other inhabited continent, this one has no officially recognized true desert region.
What is Europe?
This U-shaped bone in the neck is the only bone in the human body that does not directly connect to any other bone.
What is the hyoid bone?
As of recent counts, this ringed planet holds the record for the most confirmed moons of any planet in our solar system.
What is Saturn?
This year marked the official dissolution of the Soviet Union.
What is 1991?
This capital replaced Istanbul as Turkey's seat of government in 1923.
What is Ankara?
The coldest natural air temperature ever recorded on Earth's surface was measured at this research station.
What is Vostok Station, Antarctica?
A human infant is born with roughly this many separate bones, before many fuse together with age.
What is about 270 (soft bones/ossification centers)?
This dwarf planet and its largest moon, Charon, are so close in size that astronomers consider them a binary system.
What is Pluto?
On July 16 of this year, the Trinity test in New Mexico became the first detonation of a nuclear weapon.
What is 1945?