The Cable That Linked The World

The Cable That Linked The World

– [Narrator] You know that frustrating feeling when a message takes more than a few seconds to send? Well, it’s hard to imagine today, but before the mid-19th century, sending news across the ocean could take weeks to arrive. Then, thanks to an incredible, yet...

How Blue LEDs Changed the World

How Blue LEDs Changed the World

Smartphones, TVs, computers, iPads, and many other modern miracles are made possible by power-efficient LED screens. But the real impact goes well beyond our brightly lit gadgets. Lighting accounts for 20-30% of global electricity consumption and about 6% of greenhouse gas emissions. Given that LED...