North America is the third largest continent in the world. It is located in the Northern Hemisphere. The north of the continent is within the Arctic Circle and the Tropic of Cancer passes through ...

of having a round-the-clock look at all the airspace of the northern hemisphere, looking for potential threats heading America's way. The NGPs are, essentially, satellites, and they'll be placed ...

For the Northern Hemisphere, the official summer season ... The Incas of South America celebrated the corresponding winter solstice with a ceremony called Inti Raymi, which included food offerings ...