Potatoes Could Be Grown on Mars
In the 2015 film "The Martian," Matt Damon's character is a scientist left behind on Mars.
He has limited food supplies and not much water. He tries to figure out how to survive so he can be rescued.
Luckily, he knows how to grow things. And one of the things he grows is a potato plant.
A year later, scientists in Peru and NASA scientists in California started working together on growing potatoes in a harsh location similar to Mars.
They built a container where they could simulate the conditions on Mars. The salty soil came from the southern coast of Peru, where there is very little rain.
Inside the "Mars-in-a-box," the scientists made the air pressure similar to what it is like at 6,000-meters, decreased the temperature below zero, and added carbon monoxide to the air.
They made a lighting system that followed Mars' daytime and nighttime.
They planted 65 types of potato plants, and waited. After a while, four of them grew.
Later, the scientists took the strongest of the four plants and tried again. This time, they used crushed rocks instead of soil.
The plant still grew.
Why is the research being done in Peru?
You may not know that Peru is known as the birthplace of potato farming. People grew potatoes there about 7,000 years ago. Even in cold, barren parts of Peru, Ecuador and Bolivia, potatoes still grow.
There is also a potato research center, called the International Potato Center, in the capital city, Lima.
The surviving potato in the Mars-in-a box is known as Unique.
It can still grow in freezing climates with high amounts of carbon dioxide.
The research is not only for a trip to Mars one day.
It is going to help feed people in parts of the world that are already having trouble planting traditional crops due to climate change.
The work is not yet done.
The scientists in Peru and California will try to grow more plants in even more difficult conditions.
I'm Dan Friedell.
1.due to 由于
The country's economic problems are largely due to the weakness of the recovery.
2.climate change 气候变化
Carbon emissions exacerbate the global climate change problem.
3.traditional crops 传统作物
People can learn how to grow foods from back home as well as traditional American crops.
4.carbon dioxide 二氧化碳
Industrialized countries must reduce carbon dioxide emissions.
1.In the 2015 film "The Martian," Matt Damon's character is a scientist left behind on Mars.
left behind 留下；遗留
Once the eggs have hatched the shells are left behind.
His wife left behind her two little girls.
2.He tries to figure out how to survive so he can be rescued.
figure out 解决；算出
They're trying to figure out the politics of this whole situation
I simply couldn't figure out his intention.
在2015年上映的《火星救援》影片中，马特·达蒙（Matt Damon）饰演了一位被丢弃在火星上的科学家 。
火星上的食物供应与饮用水有限 。他想法设法存活下去，等待同伴救援 。
所幸，他知道如何种植蔬菜 。其中就包括马铃薯 。
他们打造了一个可模拟火星环境的容器 。盐渍土来源于秘鲁南部海岸，那里终年少雨 。
科学家们种植了65种马铃薯，然后开始观察 。不久，其中的4种马铃薯开始发芽 。
科学家取出这4棵生命力最顽强的马铃薯再次尝试 。这一次，他们使用的是碎石，而不是土壤 。
你可能不了解秘鲁是土豆的发源地 。约7000年前，秘鲁人开始种植土豆 。即使在秘鲁、厄瓜多尔和玻利维亚这种寒冷、贫瘠的地区，土豆仍然能够生长 。