Rafflesia. The rafflesia is found on the Malay Peninsula, Borneo, Sumatra, and the Philippines.

It's Likely Caused By Humans. Average global temperature are expected to increased b 1.5 degree C by the end of the 21st century.

Earth's Moon. The moon is the fifth largest satellite in the solar system.

Stall. Stall occurs when an aircraft is flown at an angle of attack greater than the angle for maximum lift.

Endocytosis. In endocytosis, a substance gains entry into the cell without passing through the cell wall.

Carbon Monoxide. Carbon monoxide in higher quantities is highly toxic to humans and animals.

Ocean Acidification. There is much controversy over claims that the ocean's pH is changing.

Sahara. The Sahara straddles the equator and contains the highest sand dunes.

Theory. Scientists use the term "theory" as an explanation of reality that has been thoroughly tested.

Ferromagnetic. Iron is the most well-known ferromagnet.

Planet. The planet formerly known as "Pluto" was named for the Roman god of the underworld.

Doppler. The Doppler Effect is sometimes referred to as the Doppler Shift.

Pints. The imperial pint is 20 ounces the U.S. pint is 16 ounces.

Robert Zubrin. Robert Zubrin in his book "The Case for Mars".

Carbon Dioxide. Venus' atmosphere is mostly carbon dioxide, which causes an intense greenhouse effect.

Therm. A "therm" is a non-SI unit often used by gas companies.

10%. The U.S. Department of Commerce estimates that the U.S. has 12,479 miles of ocean coastline.

It Increases. 14.7 pounds per square inch (psi) of pressure pushes down on our bodies when we are at rest at sea level, even though we are unaware of it.

84.01 Earth Years. The rotational period of Uranus is 17.23 hours.

Runoff. A collection of runoff water is called a watershed.