The world's population is still going up and (science) are worried that there will not be enough food for everybody in the middle of this century. One plant from Madagascar(马达加斯加)，the Kalanchoe fedtschenkoi, may help. It absorbs(吸收) carbon dioxide at night and it needs 10 times(little) water than corn and similar plants. This means it can grow in the desert.
It is dangerous (eat) this plant, but scientists can study two things: how it absorbs carbon dioxide at night when other plants only do this during the day, and why it is so good at living in the desert. There (be) less land for growing food in the future. Deserts are growing as Earth's climate gets warmer. Growing food in deserts will be more and more important.
There are two possible (direct) for further research. Growing a desert plant to eat will be difficult, but it isn't (possible). One way is to use the genes(基因)from this plant and put them into plants we eat, like beans or cereals(谷物). The other possible one is to grow this type of plant for fuel. At the moment, people are asking why good land (use) to grow plants for fuel and not for food. If we use desert land, this problem can be (slow) solved.
The world's climate is changing and the population is still increasing, but one strange plant could be an answer to our future food or energy needs.
