World's Tallest Waterslide Officially Open

From Aqua

We've all experienced water slides as kids.  Most modern waterparks have multiple slides with various twists, turns, drops, and gimmicks.  What most waterparks don't have, however, is the world's tallest waterslide.  This honor belongs to the Schlitterbahn Waterpark in Kansas City, according to this post from Aqua magazine, and the ride measures 17 stores high!  This post gives a first-person point-of-view video that illustrates just how thrilling this ride actually is.

Here is an excerpt from the post:

What is Concrete?

From Gizmodo

After Water, It's the most widely used material on our planet.  Ton for ton, says this article from Gizmodo, concrete is used by humans more than steel, wood, plastics, and aluminum combined.  The supply and use of concrete is a $100,000,000,000 industry.  What is amazing is that most people don't really understand what concrete really is.  This post explains the volcanic origins of concrete, how it was prevalent in the ancient world and then forgotten, and how it's rediscovery and evolution is doing more to shape our physical world than any other material on Earth.

Here is an excerpt from the post: