Cocoa may not be the panacea it was once believed to be, but it's more than just a guilty pleasure.
The Aztecs had a shining city on a lake, with canals, causeways and aqueducts – until the Spanish came. Mexico City is still suffering the consequences of their bad public health decisions.
Everything you ever wanted to know about the big G.
It may sound like a solemn affair, but the Day of the Dead – which blends indigenous and Catholic ritual – is a convivial celebration that allows Mexicans to reconnect with deceased loved ones.
Hernán Cortés owed his conquest of the Aztecs to his expedition's unknown, unseen secret weapon: the smallpox virus. Disease epidemics can set the course of human history.
For indigenous peoples, winter solstice has been a time to honor their ancient sun deity. Their rituals reveal a deep understanding of the natural world.