Our school is going to build a new classroom building. Our teacher asks us to make a “time capsule (胶囊)” together. _________ is a time capsule? It is a box and you can put something in it for people in the future. When _________ start to build the building, they will put our time capsule inside the wall. Maybe in a hundred years, someone will _________ it. So, what to put in it? Someone says we can put in a CD with popular music of today. People in the future will know what kids like us enjoyed _________. Someone else thinks of leaving today’s _________. It can show what our world is like. There are many _________ ideas—a favorite book, pictures of our school, pictures of _________. I think we can all write a short letter _________ them. Other students _________ the idea. Everyone _________ excited. What would you put in a time capsule if you were making one?

You may drink bottled water when you are thirsty. But plastic (塑料) bottles are bad for the environment (环境). Is there a way not to use a bottle?   

Try the Ooho bubble. It is a small ball of water. The water is in a soft container (容器). People use it instead of a water bottle. It has no color, no smell or no taste. It is made from seaweed (海藻) and is safe to eat.

You can make a hole in the container to drink from the Ooho bubble. Or you can just put the whole thing into your mouth. Three creators (创造者) from the Imperial College London made the Ooho bubble. It is good for the environment. And one container only costs 0. 14 yuan, so it is much cheaper than plastic bottles. So many people like it.

________ For example, each water ball doesn’t hold much water. You may have to drink a lot of them before you are not thirsty any more. Or, some may feel it’s not clean to hold the water bubble in their hands. What do you think?

In the Three-Body Problem books, Trisolarans (三体人), a kind of alien, can dewater their bodies. They can then get through terrible environments and come back to life again hundreds of years later. Is it possible that humans could be like that as well?

Scientists have now found some clues (线索)by studying water bears. These microscopic organisms (微生物) can live without water for a few years, according to University of Tokyo biologist Takekazu Kunieda.

When water bears find themselves somewhere without water, they turn into something called a tun. In this form, there are no signs of life, and they can survive (存活) on their own. Deep freezing, volcanic fire, the dark space...these tiny water bears just sleep it off and wake up once it’s safe again, said Science Alert.

But how do these little eight-legged water bears live without water? Scientists may find the answer now.

“It’s thought that as water leaves a cell (细胞), some kind of protein (蛋白质) must help the cell keep its energy to avoid breaking apart,” said Kunieda. Now scientists have found proteins unique(独特的) to water bears. The proteins protect their cells against dewatering.

Scientists also put those proteins into human cells. They found these proteins can make the human cell strong so that it won’t become smaller when losing water, said Science Alert.

With experiments (实验) of using human cells showing successful results, Trisolarans might one day come to be a reality.