During the 8th century CE, warfare and failing agriculture forced Maya people to move north, to hotter, drier Yucatán. Because of its freshwater access, Chichen Itza became the most powerful Maya city, with nearly 50,000 citizens at its...

In 2010, NASA announced the discovery of a never-before-seen galactic object: two gigantic gaseous bubbles, each emanating an impressive 25,000 light years from the center of the Milky Way. Astronomers were perplexed: what created these...

The Milky Way galaxy is relatively calm by the destructive standards of the rest of the Universe, and compared to its own very violent past. But just recently we discovered that its violent past was much more recent than we thought - and...

How do you see the unseeable - how do you explore the inescapable? Our cleverest astronomers have figured out ways to catch light that skims the very edge of black holes. Let’s find out what they learned.
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A few weeks ago a...

Black holes are really only dangerous if you get too close. Ha, who am I kidding. It turns out they may be responsible for ending star formation across the entire universe.
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When we first realized that black holes could have...

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Mentally ill people chained to trees, or locked into tree trunks - practices reminiscent of medieval times. These are the remarkable scenes that we witnessed in the Ivory Coast. But we also found one man who has embarked on a crusade of...

Paris exerts its influence in all domains of French life. From its early history two thousand years ago as a Gallic city called Lutetia, Paris evolved over the centuries as a capital city and a main cultural center of Europe. Today,...

Most schoolchildren can find Italy on a map—it’s the “boot” that’s kicking an island into the middle of the Mediterranean Sea. The island is, of course, Sicily, and the boot is Italy’s mainland. Without a doubt, Italy’s complex natural...

Milan is a bustling and immensely productive city located in northern Italy. It's the capital of Lombardy and the second-most populous city in Italy after Rome. Milan makes its mark as a global fashion capital and also serves as the...

Since the Revolution of 1789, France has had five forms of republican government. The current republic, the Fifth Republic, began in 1958. Learn more about the evolution of the constitution and the impact on modern French society....

The Chinese have a saying that “food is the first necessity of the people.” Reflecting this vital role, great thought and care go into its preparation. The Chinese use a blend of ingredients—with contrasting flavors, colors, and...

With the signing of its constitution in 1993, South Africa was divided into nine provinces, each with its own capital, legislature, and unique characteristics. The four provinces of the greatest economic importance and with the highest...

This video explains the history of geocentric and heliocentric models of the solar system.

Howcast - Learn how to do the plank and variations from personal trainer Erin Sharoni in this Howcast workout video.

Howcast - Learn how to do upper block karate moves from karate instructor Richard Amos in this Howcast video.

Howcast - Learn how to do advanced block karate moves from karate instructor Richard Amos in this Howcast video.

Howcast - Learn how to make a spicy tuna roll from sushi chef Mamie Nishide in this Howcast food video.

Howcast - Learn seven facts about infant screening tests from pediatrician Dyan Hes, M.D. in this Howcast video about newborn and baby development.

Howcast - Let chef Michelle Doll show you how to cut a cake tier board in this Howcast video about wedding cake decorating.

Howcast -Learn how to make a honeycomb Rainbow Loom bracelet in this Howcast video featuring The Lanyard Ladies.

Like cooking a French meal, giving yourself a French manicure requires a lot of time, patience and ingredients — it's also a luxurious process you'll enjoy every second of.

Howcast -Learn how to make a zigzag Rainbow Loom bracelet in this Howcast video featuring The Lanyard Ladies.

Howcast -Learn how to make a rainbow splash Rainbow Loom bracelet in this Howcast video featuring The Lanyard Ladies.