Rare earth elements in the ocean floor

Rare earth elements are important to technologies like cell phones, televisions, fluorescent light bulbs and wind turbines. And the mother lode of rare earth elements is in the ocean floor.

Mandarin Chinese will be the language of interstellar travel

As China prepares to overtake the United States as the world's economic superpower, it is quite clear to me that Mandarin Chinese - rather than American English - will be the language of interstellar travel.