Jacob's Well, Texas The spring then angles down into one of the largest underwater caves in the state of Texas, reaching a depth of a massive forty metres. Read more: http://www.dailymail.co.uk/news/article-2521271/Jacobs-Well-Wimberley-Texas-dangerous-places-dive-Earth.html#ixzz3lB4t8Why Follow us: @MailOnline on Twitter | DailyMail on Facebook
7,000 of America’s rivers lead into the Mississippi and from there into the Gulf of Mexico, covering pretty much all of the Midwest but surprisingly little of the South- 36 maps that will make you see the world in completely new ways
These Guys From MIT Just Reinvented The Bicycle Wheel | 9gag.tv - Imagine cruising through the city on a bike at 20 mph without exerting much effort? That's what a hybrid bike can do. Any ordinary bike can be turned into a hybrid through the Copenhagen Wheel—a motorized disk unit that attaches to the rear wheel.
The world's tallest building, the 2,700ft-high Burj Khalifa, appears through a carpet of fog as the lights from Dubai's shops and apartments illuminate the low cloud from below. Picture: Ian Powell / Barcroft Media