One interesting fact about estuaries is that they are among the most productive ecosystems in the world. Estuaries occur when saline water mixes with freshwater, forming brackish water. These estuaries are home to divers... More »

Adaptations of plants living in estuaries include the ability to survive in water of varying salinity levels, cells that store oxygen for use underwater, and the ability to reproduce by releasing new plants ready to germ... More »

The environments created by estuaries are extremely productive and generate more organic material than equally sized grassland, forest or agricultural areas. Unique communities of animals and plants are supported by the ... More »

The Arctic Ocean is the smallest ocean in the world and is about 8 percent of the size of the Pacific Ocean. Its water is consistently cold with temperatures ranging between minus 30 to minus 70 degrees Celsius throughou... More »

The Nile is the longest river in the world at 4,132 miles long and is the site and lifeblood of the ancient Egyptian civilization. The name of the Nile comes from the Greek word "neilos," which may be derived from the Se... More »

An interesting fact about beam bridges is that the world's longest bridge is a beam bridge called the Lake Ponchartrain Causeway; it is nearly 24 miles in length. Beam bridges are not normally used for long distances bec... More »

In addition to being considered one of the world's greatest inventors, another interesting fact about Thomas Edison is that he was famous for his dislike of sleep. Edison is also known for being incredibly strict with bo... More »