Peru Pyramid

A tower of human skulls unearthed beneath the heart of Mexico City has raised new questions about the culture of sacrifice in the Aztec Empire after crania of women and children surfaced among the hundreds embedded in the forbidding structure.

Architects seeking solutions for sustainable living in the 21st century are taking notes from the ancient city of Caral in Peru, an engineering marvel built some 5,000 years ago.

Real estate developers using heavy machinery tore down a 20-foot (6-meter) tall pyramid at the oldest archaeological site near Peru's country's capital, cultural officials said on Wednesday.

A tower of human skulls unearthed beneath the heart of Mexico City has raised new questions about the culture of sacrifice in the Aztec Empire after crania of women and children surfaced among the hundreds embedded in the forbidding structure.

Architects seeking solutions for sustainable living in the 21st century are taking notes from the ancient city of Caral in Peru, an engineering marvel built some 5,000 years ago.

Real estate developers using heavy machinery tore down a 20-foot (6-meter) tall pyramid at the oldest archaeological site near Peru's country's capital, cultural officials said on Wednesday.