Explore visionary megastructures poised to redefine our future, from Earth's towering arcologies to colossal space-based ...

Across the world, large dams stand as some of humanity’s most ambitious engineering achievements.

There are three ways to look for evidence of alien technological civilizations. One is to look out for deliberate attempts by them to communicate their existence, for example, through radio broadcasts ...

A story that went viral this week reports that astronomers finally found E.T., but those aren't the facts. CNET's Eric Mack talks with the astronomers involved about what is still a very interesting ...

We peel back the layers of the great church of Hagia Sophia in Istanbul to reveal its incredible engineering secrets, and vividly bring to life the astonishing story of its construction. We peel back ...

This program brings to life the ingenious engineering solutions and treacherous political betrayals that gave birth to what is arguably the most perfect example of Moorish architecture in existence - ...