Chichén Itzá, Mexico — At the spring and fall equinoxes, the setting sun casts serpent-like shadows along the northern stairs of El Castillo, or “the castle.” Built more than a thousand years ago by ...

Lucas Downey is the co-founder of MoneyFlows, and an Investopedia Academy instructor. Gordon Scott has been an active investor and technical analyst or 20+ years. He is a Chartered Market Technician ...

For 5,000 years scholars, generals, and mystics have been fascinated by the Egyptian pyramids. That obsession persists in the modern age. Today the Pyramids of Giza are surrounded by desert. But 4,600 ...

Archaeologists working in a tunnel beneath Teotihuacan's Pyramid of the Sun have unearthed two caches of artifacts that may have been meant to consecrate the massive building's construction around a.d ...

Pattern formation is the developmental process by which cells acquire different identities, depending on their relative spatial positions within the embryo. Pattern formation ensures that tissues and ...

Ponzi and pyramid schemes both take advantage of unsuspecting individuals by promising extraordinary returns in exchange for their money. With Ponzi schemes, investors give money to a portfolio ...

What's CODE SWITCH? It's the fearless conversations about race that you've been waiting for. Hosted by journalists of color, our podcast tackles the subject of race with empathy and humor. We explore ...