Today on Daily Planet, we check out the biggest industrial zone in the world, take a wild ride on one of the world's biggest roller coasters and give you a peek at the largest hydroelectric project ever attempted. Alan Nursall checks out what's going on under Union Station, we go through the toughest tunnel in North America and enjoy a huge firework display. Later, we learn about what the future holds for the biggest trees in the world that have been around for over 2000 years. Needless to say, today we're going big. All this and more, tonight! Only on Daily Planet!
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