TOKYO—Lonely astronauts on the International Space Station (ISS) may soon be getting a robot friend from Japan.

    Japan's space agency is considering putting a talking humanoid(有人的特点的) robot on the ISS to watch the work while astronauts are asleep, monitor their health and stress levels and communicate to Earth through the micro­blogging site Twitter.

    Japan's space agency JAXA announced this week that it is looking at a plan to send a humanoid robot to the space station in 2013 that could communicate with the ground through Twitter—primarily feeding photos, rather than original ideas —and provide astronauts with “comfort and companionship”．

    Following up on US NASA's “Robonaut” R­2 program, which is set for launch on the Discovery shuttle next week, the Japanese robot would be part of a larger effort to create and refine robots that can be used by the elderly, JAXA said in a statement.

    Japan is one of the leading countries in robotics and has a rapidly aging society with one of the world's longest life expectancies.

    Improving robot communication capabilities could help elderly people on Earth by providing a nonintrusive(无干扰的) means of monitoring the robot owner's health and vital signs and sending information to emergency responders if there is an abnormality, JAXA said.

    “We are thinking in terms of a very human­like robot that would have facial expressions and be able to talk with the astronauts，” said JAXA's Satoshi Sano.

    The robot was being developed with the advertising and communications giant Dentsu Inc and a team at Tokyo University.

    The NASA project has a human­like head, hands and arms and uses the same tools as station crew members. The “Robonaut” called R­2 is intended to carry out maintenance tasks in the station's Destiny lab.

    NASA says it hopes that humanoid robots could one day stand in for astronauts during spacewalks or perform tasks too difficult or dangerous for humans.

    For now, the $2.5 million NASA robot is limited to activities within the lab.

    Many Years ago three soldiers,hungry and tired of battle,came upon a small village.The villagers,suffering a bad harvest and the many years of war,quickly hid what little they had to eat and met the three in the village square, shaking their heads and sighing,"Well,we are starving."The soldiers communicated with each other quietly and then the first soldier turned to the villagers.“Your poor fields have left you nothing to share,so we will share what little we have: the secret of making soup from stones.”

    Naturally the villagers were intrigued and soon a fire was built to the village's greatest pot,and then the soldiers dropped in three smooth stones.

“Now this will be a fine soup,”said the second soldier,"but a handful of salt and some parsley（香芹）would make it wonderful!"Up jumped a villager,crying “What a piece of luck!I've just remembered where some has been left!”

    And off she ran,returning with parsley.As the pot was boiling,the memory of the villagers improved: soon carrots,beef and cream had found their way into the great pot.They ate and danced and sang well into the night, thrilled about the feast and their new-found friends.In the morning the three soldiers awoke,finding all the villagers standing before them.At their feet lay a bag of the village's best bread and cheese.“You have given us the greatest gift,”said an elder,“and we shall never forget.”The third soldier turned to the crowd,and said,“There is no secret,but this is certain: people working together can accomplish great things.”At last the light dawned on villagers.Off the soldiers wandered,down the road.

    Last year，I was on a plane with my friend, waiting for it to take off．The pilot's voice was heard throughout the plane “Sorry for the delay, ladies and gentlemen. Our engines don't work．We are going to jump-start them．Once we get them going, we'll get up in the air and see what happens．"

    That was all he said．"See what happens. Shouldn't we have had a better plan than that？"At that point, I could only laugh nervously. One woman started crying, “OH，no! We are going to crash!”. There are signs of desperation and anxiety, and we hadn't even taken off yet．

    The pilot even seemed unhappy．He told us one engine was working double time and his plan was to get up in the air and see what happens! Then we did．We got up in the air，and what happened？

    Nothing．We arrived in Norfolk, and no sooner had the wheels touched down than applause burst out as everyone on the airplane breathed a sigh of relief．

    All too often, people stop achieving their goals just because they don't have a guaranteed result．But success will never be guaranteed. The best thing that you can do is to just get up in the air and see what happens．

    If your aim is to build a business, then get up in the air and see what happens! Don't give yourself all the reasons why you can't．Do not wait until you have everything you need．You never will．

    If your goal is to start a friendship，say"Hello",get up in the air and see what happens! The results could be very rewarding．If your goal is to learn a new skill, get up in the air and see what happens! It might not be as difficult as you think．It could be fun!

    I recently had dinner with someone who told me that one of his best friends had been killed in a private plane crash, and something happened at the memorial service that he'll never forget. He shared the story with me.

    At the memorial service, his friend's wife walked to the platform to speak to the gathering. She said a friend had asked her the best memory she had of their life together. At the moment, she had been too sad to answer, but she had thought about it since and wanted to answer the question.

    They were in their late forties when he died, and she began talking about a time in their life almost twenty years earlier. She had quit her job to obtain her master's degree, and her husband never hesitated in his support.

    He held down his own job and also did the cooking, cleaning, and other housework while she studied for her degree.

    One time they both stayed up all night. She was finishing her paper, and he was preparing for an important business meeting. That morning, she walked out of her study, leaned against the door by the stairs, looked at her husband downstairs and just thought about how much she loved him. She knew how important this meeting was to his future, and she was feeling guilty that she didn't even have time to make his breakfast. He took his briefcase and hurried out. She heard the garage door open and close, but much to her surprise, she heard it open again about thirty seconds later. From above, she watched her husband dash into the house and walk over to the forgotten coffee table. Marking the surface of it with his finger through the dust with the words "I love you", then he raced back to his car.

    The new widow then looked out at her audience and said, "John and I had a wonderful life together. We have been around the world several times. We've had everything money can buy but nothing comes close to that moment."

    Hearing this, I was deeply moved. "Love makes life worthwhile."

It's breathtaking to watch the delicate spring wildflowers come out from their blanket of leaves, bloom, develop and disperse (传播) fruit, all in a matter of a few short days or weeks.

Although they look fragile, these are tough little plants, each focusing its efforts on spreading its species. They have evolved to have a wide range of flower structures and colors, some with fragrances, attracting many different insect species to assist them in pollination (授粉).

There is one strategy that a surprising number of spring blooming native plants have evolved in common: seed dispersal by ants. As many as thirty percent of the spring flowering plant species in the forests of eastern North America have evolved to take advantage of this situation to benefit themselves. These species have evolved to provide food attached to their seeds to encourage ants to disperse those seeds. This food, called an elaiosome（油质体）, is a specialized fat body whose chemical composition more closely matches that of the insects that ants prefer than it does that of a seed.

When a fruit opens to disperse its seeds, the elaiosomes are an instant attraction for ants. They take the seed with its attached elaiosome back to their nests for consumption there, but they just eat the elaiosome, their preferred food, and dispose of the seed on their trash pile. This tends to be an environment that is rich in nutrients, and will benefit the growth of the new plant. Just to make sure the ants don't eat the seeds in addition to the elaiosome, some plant species have hard seed coatings that ants can't really bite through.

This evolutionary adaptation is somewhat similar to the strategy of plants that have evolved to surround their seeds with fleshy fruits to attract birds to assist them with seed dispersal. Given the fact that there are fewer birds available in early spring to help with seed dispersal, it makes sense that the early blooming plants evolved to partner instead with the ants for this service.

Did you ever wonder how your Spring Beauty managed to pop up in new locations in your lawn or garden? Thank an ant!

90 percent of the world's fireworks are produced in China. The biggest importer is the US, which {#blank#}1{#/blank#} (ship) in more than US $650 million worth in 2021.

The details of fireworks' invention are lost to history, but {#blank#}2{#/blank#} folk tale tries to fill in the gap. It goes that monk named Li Tian created fireworks around 1400 years ago by packing gunpowder into bamboo tubes {#blank#}3{#/blank#} (scare) off evil spirits.

An explosive mixture of gun-powder and chemical compounds (化合物) is {#blank#}4{#/blank#} makes fireworks flash in pretty colours and fun shapes. The images they make depend on the placement of these compounds inside the shell of the firework. Crowd {#blank#}5{#/blank#}(favorite) include "comet", featuring a long trail of sparks; "peony", a flower-like burst; and "strobe", which produces a blinking effect.

The single biggest firework shell ever shot was part of a 2020 winter-carnival display in Colorado, US. {#blank#}6{#/blank#} (weigh) 1268 kilograms, it rose more than a kilometre into the sky {#blank#}7{#/blank#} bursting, turning the night sky red.

For centuries we had to light firework {#blank#}8{#/blank#} hand, but since the 1980s, there's been another option: computer-controlled lighters, which made music at displays more {#blank#}9{#/blank#} (precise) timed and safer. An even greener alternative recently {#blank#}10{#/blank#} (adopt) is using drones to trace flashy patterns in the sky. The future of fireworks, like so much else, may be robotic.