Time Zones

Time zones sometimes seem positively eccentric, affected as they are by political, geographical and social changes in the real world. But as irregular as they are, if you want to divide the world up into time zones, you need a way to measure time. Review rich online...

Mapping Human Migration

The Spencer Wells Genographic Project is seeks to chart new knowledge about the migratory history of the human species by using sophisticated laboratory and computer analysis of DNA contributed by hundreds of thousands of people from around the world. In this...

Happy National Parks Week!

National Park Week is here! From April 21st through the 29th you can get into any national park for free. This is NPS\’ effort to invite all Americans to experience their national parks, especially first-time visitors. Visit the NPS website to find a park near...