Striped icebergs are quite a view. They can form a couple different ways. Blue stripes occur when layers of ice melt and refreeze so fast that no bubbles — which scatter light to give icebergs their white appearance — are created. If the water that freezes is rich in algae, the bands may appear green. Black, brown, and yellow striations are created by sediments picked up by a glacier as it runs down a mountain into the ocean.
This 745-foot aerial sculpture stretched along the Vancouver waterfront at TED2014. The net-like design, created by artist Janet Echelman, was made from a fiber called Spectra, which is 15 times stronger than steel.
Passersby could use their cell phones to manipulate the lights, a trick set up by Google’s Aaron Koblin."The lighting on the sculpture is actually a giant website,"he says. “It’s one huge Google Chrome window spread across five HD projectors.”