Yellowstone National Park has just completed a new 4,000-square-foot walkway built with Flexi-Pave, an asphalt replacement made from recycled tires, stone, and a proprietary binder invented by KBI. It’s so efficient that one square foot of Flexi-Pave can absorb 3,000 gallons of water per hour. How does it work? Simply put, its 23% porous material allows rainwater to flow directly into the earth, where it settles in nearby aquifers. When used in residential areas, it can absorb rainwater quickly, which keeps storm runoff from mixing with local contaminants before entering the water supply, thus decreasing water pollution. Click here to view the first image in today’s viral picture gallery. Continue reading for the five most popular viral videos today, including one of an extreme jet blast by a KLM 747.