The Empire State Building is a skyscraper in Manhattan, New York City, USA. The building has 103 floors and at roof height is 1250 ft (...
The Empire State Building is a skyscraper in Manhattan, New York City, USA. The building has 103 floors and at roof height is 1250 ft (...
The Leaning Tower of Pisa (Torre pendente di Pisa) is a bell tower in Pisa, Italy. The Tower of Pisa is world famous for its promin...
The word skyscraper originally referred to a type of sail on a sailing ship. A skyscraper is held together by a steel skeleton ...
Common types of bridges include beam bridges, arch bridges, suspension bridges, cantilever bridges, truss bridges, and cable-stayed bri...
The Statue of Liberty is located on Liberty Island, in the New York harbor, USA. The Statue of Liberty commemorates the American Decla...
The Channel Tunnel is an undersea rail tunnel that links the United Kingdom and France. Opened in 1994, it carries both passenger and fr...
Rather than being one long continuous wall, the Great Wall of China is made up of a number of different sections. These sections were bu...
Located on the Champ de Mars in Paris, France, the Eiffel Tower is one of the most well known structures in the world. The Eiffel Tower...
A dam is a barrier designed and constructed to contain the flow of water. It is often built in conjunction with a hydroelectric power st...
The Titanic was built between 1909 and 1911. It was 882 feet (269 metres) in length and 175 feet (53 metres) in height. The Titanic ...
Forensic science uses a range of sciences to answer questions related to legal situations. Forensic science is often used in relatio...
Because of differences in gravity, a 200 pound person would only weigh 76 pounds on Mars. More gravity facts. Electric eels can stun...
People that study biology are known as biologists. Australia’s Great Barrier Reef is the largest living structure on Earth. Reaching...
Fire is a chemical reaction that releases light and heat. Substances combine with oxygen in the air, combusting with a flame and oft...
The word ‘nuclear’ is related to the nucleus of an atom, it is often used to describe the energy produced when a nucleus is split (fiss...
The noise that is thunder is created when the air around lightning gets rapidly heated and expands at a rate faster than the speed of s...
Hydrogen is the first element on the periodic table. It has an atomic number of 1. It is highly flammable and is the most common elemen...