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![Hawking has helped the popularity of theoretical physics. [©Shutterstock, 2010]](/image/350x200/3007_who_is_stephen_hawking.jpg)
Science and Engineering » Space Sciences
Who is Stephen Hawking?Find out who Stephen Hawking is and what his field of study.
Stephen Hawking has made many important contributions in his field of study. Find out who Stephen Hawking is and what his theories are.
![Coal, pictured here, is a particularly dirty fossil fuel. [©Shutterstock, 2010]](/image/125x125/2445_why_are_coal_oil_and_natural_gas_called_fossil_fuels.jpg)
Science and Engineering » Energy Why are coal, oil and natural gas called fossil fuels?Learn why coal, oil and natural gas are called fossil fuels. |
![The tools and theories of medicine have advanced dramatically over the years. [©Shutterstock, 2010]](/image/125x125/235_who_is_generally_regarded_as_the_father_of_medicine.jpg)
Science and Engineering » Medical Science Who is generally regarded as the father of medicine?A physician from ancient Greece is regarded as the father of medicine. |
![Thermopan windows like this can go a long way to reducing energy costs. [©Shutterstock, 2010]](/image/125x125/2778_who_invented_thermopane_glass.jpg)
Science and Engineering » Physical Sciences Who invented thermopane glass?Learn who invented thermopane glass. |
![Medical equipment and implements have advanced greatly. [©Shutterstock, 2010]](/image/125x125/2574_who_is_generally_regarded_as_the_father_of_medicine.jpg)
Science and Engineering » General Science and Technology Who was the first woman to be named to the National Inventors Hall of Fame?Learn about the first woman to be named to the National Inventors Hall of fame. |
![A park bench can be an ideal spot for relaxation. [©Shutterstock, 2010]](/image/125x125/4679_park.jpg)
U.S. Government » State and Local Agencies ParksA park can be as simple as a grassy area with a playground or more elaborate to include hiking trails and stables. |
![The Brown Mountains of North Carolina used to contain some mysteries. [©Shutterstock, 2010]](/image/125x125/3012_what_is_the_origin_of_the_brown_mountain_lights_of_north_carolina.jpg)
What is the origin of the Brown Mountain Lights of North Carolina?
Find out what the origin of the Brown Mountain Lights of North Carolina is. |
![A patent protects a person's invention from being usurped by others. [©Shutterstock, 2010]](/image/125x125/1640_how_to_get_a_patent.jpg)
U.S. Government » Independent Agencies and Government Corporations How To Get a PatentFind out how to get a patent to protect your idea or invention. |
![Hurricane shutters help protect windows from strong winds and flying debris. [©Shutterstock, 2010]](/image/125x125/1575_hurricane_shutters.jpg)
Hurricane Shutters
Find information about different types of hurricane shutters. |
![An example of the plant, wormwood. [©Shutterstock, 2010]](/image/125x125/2857_what_is_wormwood.jpg)
Science and Engineering » Biological Sciences What is wormwood?Learn what wormwood is where it comes from. |
![A federal caucus will take place in Washington D.C. [©Shutterstock, 2010]](/image/125x125/2045_what_is_a_caucus.jpg)
What is a caucus?
Learn how a caucus works and where the term originated. |
