Stories of the Week | Tech Pioneers, Popcorn, NASA & Bridges

This week, we're highlighting these four top stories: watch Peruvians fix an ancient bridge with just wild grass and ancient Inca skill, see how NASA is improving life on Earth, learn how a movie snack is being turned into packaging and catch the latest technology making our world a more sustainable place.

1) 0:15 How Inca skills fixed this bridge
2) 1:25 Packaging made from popcorn
3) 2:27 NASA tech that improves your life
4) 3:44 5 exciting green tech pioneers

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