The largest steel plant in the world is a hi-tech super factory that takes production to astonishing levels, turning out 21 million tons of steel every year on a sprawling campus comprised of 50 individually operating sub-factories.
New York City has some of the most iconic bridges in the world like the Brooklyn Bridge and the George Washington Bridge. These engineering marvels have helped set the tone for how bridges around the world are designed. Here is how New York builds and maintains its aging bridges.
Dial in to the fascinating history of the smartphone, from its roots in Morse Code to 2007, when Apple unveiled the first-ever iPhone. Plus, see how the next generation of Smartphones will allow us to communicate through them just by thinking.
More than 2,000 years ago, the thriving city of Petra rose up in the bone-dry desert of what is now Jordan. An oasis of culture and abundance, the city was built by wealthy merchants whose camel caravans transported incense and spices from the Arabian Gulf. They carved spectacular temple-tombs into its soaring cliffs, raised a monumental Great Temple at its heart, and devised an ingenious system that channeled water to vineyards, bathhouses, fountains, and pools.