Why Do We Have Daylight Saving Time?
Why do we fall back one hour in the autumn, and spring ahead one hour in the spring?
Most U.S. residents dutifully set their clocks...
The 7 Wonders of the Ancient World
Centuries ago, in a seemingly lost age where rulers built monuments of stone, seven structures stood out for their grandiosity, and for the awe...
Frozen in Time: A Look at Time Capsules
Time capsules allow their creators to freeze moments in time and communicate those moments to future generations. They encourage a dialogue with history, and...
Lending an Artistic Touch to Math
Some educators are using the arts and humanities to enhance their teaching of math.
Math for Web 2.0
Unlike the arts, Math has struggled to find...
The Origins of Christmas
December 17, 2013
by Denis Cummings
Since the mid-fourth century, Western Christians have celebrated Christmas on Dec. 25 to honor the birth date of Jesus Christ....
11 Things You May Not Know About Abraham Lincoln
by Denis Cummings
Abraham Lincoln is one of the most studied figures in American history, but there is still much you may not know about...
Civil Rights Cities: Little Rock, Arkansas
Witness to one of the defining moments in the U.S. civil rights movement, Little Rock, Ark., made history in 1957 when nine African American...
Plymouth: Where Thanksgiving Was Born
Plymouth, for a small group of Americans, is the source of their ancestry in North America. But for most of us, it is Chapter...
Coral Reefs and Why They Are In Danger of Extinction
Climate change, water pollution, destructive fishing and damage to coastal habitats are all contributing factors.
Background: What Are Coral Reefs?
Teeming with life, coral reefs are...
Understanding Winter Solstice
Winter Solstice this year will fall on December 21, but what exactly is a solstice? Learn more about how this astronomical event has been...















