Previous landmark scientific discoveries like the Higgs boson provide a better template for what it will take to confirm whether aliens have made contact with Earth.
SpaceX, the rocket company founded by Elon Musk, will be going public and is expected to become the largest IPO in stock market history. Musk and the company are looking to raise roughly $75 billion. That would raise the company's value to about $1.7 trillion, automatically making it the world's most valuable publicly traded company. Geoff Bennett discussed more with Ron Insana.
Polynesian navigators did depend on a ‘star compass,’ but it wasn’t a physical device. Instead, it was a mental map of the horizon, writes Nigel Henbest
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