Long before municipal water treatment plants and chlorination, ancient societies faced the same essential challenge we encounter today: finding reliable sources of clean drinking water while keeping ...

When we think about cutting-edge technology, we usually picture Silicon Valley startups or futuristic labs. But here's the ...

Roman, Egyptian, and Chinese civilizations had many different ingenious inventions. Chocolate was a big aphrodisiac for Mesoamerican civilizations and used for energy. The first earthquake detector is ...

Constructed between the eleventh and fifteenth centuries, Great Zimbabwe features massive stone enclosures built entirely without mortar. Granite blocks were carefully shaped and stacked to create ...