The world's tallest building officially opened on Monday, January 4. The Burj Dubai, the tallest skyscraper in the world, is 200 stories tall and contains housing, offices, and a hotel. Standing at a height of over 800 meters (2,625...

Giant salamanders must swim upstream to lay their eggs, but navigating all the dams can make the trip nearly impossible. A new program helps the salamanders get around the dams while still protecting the cities in Japan from flooding...