It’ll cost you $32 to visit the One World Observatory beginning in late May when it opens to the public atop the new 1 World Trade Center. And when you do, you’ll travel at around 23 miles per hour in ...

The Mars Express orbiter launched to the Red Planet. Twenty years later, ESA has delivered a high resolution color image of ...

Lake Urmia, once the world's second-largest saltwater lake, has shrunk drastically, leaving salt-encrusted marshes and barren flats in its southern region. Its decline reflects deeper challenges ...