NOW, LEARN HOW TO GROW FOOD ON MARS

WASHINGTON (TIP): US scientists are helping students figure out how to farm on Mars, much like astronaut Mark Watney, played by Matt Damon, attempts in the critically acclaimed movie ‘The Martian’. Washington State University (WSU) physicist Michael Allen and and University of Idaho (UI) food scientist Helen Joyner teamed up to explore the challenge.

Their five-page study guide was published at the National Centre for Case Study Teaching in the journal Science.

Allen and Joyner have students identify potential challenges to producing crops indefinitely and develop criteria for selecting crops. Students then use a scoring system to select three optimal foods. In some 30 trial runs with students and teachers, “no two people have ever gotten the same answer”, said Allen. One particular challenge is that scientists have little idea of what Martian soil is actually like, he said. Probes have detected little carbon, the central element to life as we know it, or nitrogen, which is needed to make protein.

Water is also likely to react with peroxides in the soil, bubbling off as gas. Like real astronauts, the tabletop astronauts are limited in what they can bring, so they won’t have a lot of tools to farm with. “You are starting with nothing. If I had to eat a single food for the rest of my life, could I do it?” Joyner said.But in a sense, farming and dining on the Red Planet is beside the point, Allen said. “I’m not teaching about growing food on Mars. I’m teaching about living with choices. I’m teaching about problem solving,” he said.

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