How Algae Could Change The Fossil Fuel Industry https://www.youtube.com/watch?v=yCNkmi7VE0I Subscribe! http://bitly.com/1iLOHml Gold has been a valuable commodity for centuries, but the process...
========== Gold is one of the most precious metals in
the world, and has run the gamut from its use as currency, to jewelry, and even to electronic
plating, and infrared shielding. But for many people the cost far outweighs
its intrinsic value. Seeker Stories went to South America to learn
about some of the worst exploitation, both human and environmental. Check it out. Gold is maybe the most universal shorthand
there is for value, and for greed. The ancient Egyptians were obsessed with it. European explorers marauded through South
America in search of it. And American cities like San Francisco and
Seattle rose to prominence because of it. It’s a big part of our history as humans. Looking at all that, our obsession with gold
also seems historical, sort of old t...