Fossil Fuel: noun – a fuel (as coal, oil or natural gas) that is formed in the earth from plant or animal remains.
Fossil fuels are an important part of everyday life. These resources — coal, oil and natural gas — are currently the main sources of the world’s energy, although wind, nuclear, hydro and […]
In 1803, President Thomas Jefferson purchased a massive amount of land from France in a transaction called the Louisiana Purchase. For 68 million Francs, or $15,000,000, America gained 828,000 square miles of land. This seems like a large amount of money, but it turned out to be less than 3 cents per acre. After acquiring […]
Scientists today know a lot about how and why humans – and most all living things for that matter – are the way we are. The secrets in genes and DNA that used to be a mystery are being unlocked at a quick pace. We no longer wonder why one person has blue eye and […]
There was a time when people believed that the earth was flat. Of course, it’s not. It’s not perfectly round either, though. It’s true! Earth is an oblate spheroid. It is squished at the North and South poles and bulging around the equator. And this bulge means that from the center of the earth to […]
noun: ecosystem; plural noun: ecosystems:
A biological community of interacting organisms and their physical environment. (in general use) a complex network or interconnected system.
Have you ever heard of the Galapagos Islands? If not, don’t worry, a lot of people haven’t. The Galapagos Islands are volcanic islands that are located […]
The human body is an amazing machine. Huge numbers of cells, around 37.2 trillion, work together to make a complex living and breathing system that can think and act in everyday life. The cells are the basic building blocks of life. All living things have them, but it is what is in these cells […]
Understanding economics, or how the economy works, doesn’t have to be difficult; but it is very important. The economy is the system of resources and wealth of a nation. This is important to understand because it affects everyone by determining prices. The two most important forces in the economy are supply and demand. Supply is […]
noun: municipality; plural noun: municipalities
a city or town that has corporate status and local government
A municipality is a city administrative division, which has powers of self-government. The term is also used to refer to the governing body of a city.
A municipality can be any political jurisdiction from a sovereign state to […]
How many countries do you think there are in the world? That question might be harder to answer than you would expect. The United Nations is an organization made up of countries from around the world. These countries work together to maintain peace, promote sustainable development, protect human rights, uphold international law and deliver humanitarian […]
large-scale processes affecting the structure of the earth’s crust.
Did you know there are plates on the surface of the earth? Not plates like your mom serves dinner on, but plates that are actually like skin wrapped around the world. The study of these plates is called tectonics.
There are […]