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How Invasive Species Work
They bring herds of identical friends, they eat all the food and they just won't leave the party. How can we get rid of these uninvited guests in Earth's ecoystems? Read more »
Author's Note: 5 Green Technologies for Interplanetary Space Travel

Green technology and interplanetary space travel may seem like a strange combination, but it makes sense. Green technology is all about finding environmentally-friendly and efficient ways to achieve goals. Interplanetary travel by necessity requires efficiency and safety. It's fun to imagine crossing the galaxy in a spaceship kitted out with replicators and holodecks, but it's a safe bet that our early days of space travel will be more about making every effort count.

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