When you travel in other countries, you'll have to get yourself well prepared to ensure your safety and handle emergencies.

Before you leave, you'd better:

1). Take out medical insurance policy and learn what the plan covers and whether departure or return to the hometown is covered. Figure out payment choices, such as whether you have to speak directly with the insurance company, before or after treatment, whether you have to pay first and get compensation later.

2). Keep up to date on all required vaccinations (接种疫苗) .

3). Learn about the city or area where you are going to travel. Know how to say street names and landmarks in the local language. Figure out unique climate issues such as altitude, seasonal changes, potentially risky animals and insects.

4). Visit some local hospitals and write down addresses in the local language along with emergency entrance locations; do the same for dental/pediatric (小儿科的) services. Get first aid equipment with necessary medications. Take enough prescribed medication from the home country.

5). Carry a card or note written in both English and the local language listing your emergency contact numbers, name, basic medical information such as blood type and allergies (过敏) .

6). Ensure a reliable means of communication is available and carry an extra phone battery and a charger. Ensure that housemaids, drivers, office assistants, those who work or travel know how to call for medical assistance since they may be the only ones available in an emergency.

7). Make sure to bring all documents and visas along with you. Plan your journey carefully and carry copies of documents (ID, insurance policy records, medical records) and keep in a place where someone else could access them in an emergency.

    Scotland has long been characterized as a land of romance. It contains ruins of many ancient castles and abbeys，and there is an attractive beauty in its mountains，long deep valleys，and ribbon lakes.Each year those things attract a great number of tourists.

    Numerous islands line the coast.In the north are two large groups，the Orkney Islands and the Shetland Islands.Close to the west coast are the Inner and Outer Hebrides groups，and the islands of Arran and Bute.

    The land may be divided into three regions: the Highlands in the north，the Central Lowlands and the Southern Uplands.

    The Highlands are wild and picturesque(如画的)． A long valley called Glenmore crosses the Highlands from southwest to northeast.

    In the south of the Highlands are the Grampian Mountains，highest in the British Isles. Ben Nevis，the highest peak，rises to 1,243 meters.Ben Lomond rises from the shore of Loch Lomond，Scotland's largest freshwater lake.

    The Central Lowlands run from southwest to northeast and the greatest length is nearly 145 kilometers.The soil here is fertile，and there are four coalfields underlying the area.In the east is Edinburgh，Scotland's historic capital city，and in the west is Glasgow. Almost 90 percent of Scotland's population live in the Lowlands.

    In the Southern Uplands, the hills are generally less than 600 meters high. Their rounded or flat tops are often capped with dark peat(泥炭). Along the slopes are plants like grass and heather(石南花).

    The single, decisive factor that made it possible for mankind to settle in lasting communities（社区，聚居地）was agriculture. After farming was developed in the Middle East in about 6500 BC, people living in family units did not have to be on the move continually searching for food or hunting their animals. Once people could control the production of food and be assured of a reliable supply of it, their lives changed completely.

    Farming was a revolutionary discovery. It not only made settlements possible and later the building of cities but it also made available a reliable food supply. With more food available, more people could be fed. Population therefore increased. The growing number of people available for more kinds of work led to the development of new social formations. With more and more food, a community could support a variety of workers who were not farmers.

Farming in the world over has always relied upon a dependable water supply. For the earliest societies this meant rivers and streams or regular rainfall. The first great civilizations grew up along rivers. Later communities were able to develop by taking advantage of the rainy seasons.

    All of the ancient civilizations probably developed in much the same way, in spite of a few differences. As villages grew, the production of more numerous goods became possible. Cloth could be woven from wool. Houses made of wood, brick, and stone could be put up.

    The science of mathematics was an early outcome of agriculture. People studied the movements of the moon, the sun, and the planets to work out seasons, By doing so they created the first calendars（日历）. With a calendar it was possible to find out the arrival of each growing season. Measurement of land areas was necessary if field was to be divided accurately. Measurement of amounts, for example, of seeds or grains was also a factor in farming and housekeeping. Later measures of value as money exchange became common.

    All of the major ancient civilizations in Mesopotamia, Egypt, the Indus Valley, and China appeared in the 4th millennium（千年）BC. Historians still argue over which one came into being first. It may well have been the Middle East. This place reaches out from the Nile River in Egypt northward along the coast of former Palestine, then eastward into Asia to include Mesopotamia. In this area people settled along the riverbanks and practiced field agriculture. This kind of farming depended on the reproduction of seed, normally from grain crops.

    “We haven't found anything that we can't recycle!”

    Cigarette ends are everywhere—littering our streets and beaches—and for decades they've been thought of as “unrecyclable”. But a New Jersey based company, called TerraCycle, has taken on the challenge, and has come up with a way to recycle millions of cigarette ends and turn them into industrial plastic products. Its aim is to recycle things that people normally consider impossible to reuse.

    Obviously it would be even better for the environment if everyone just stopped smoking, but the statistics show that although there has been an increase in anti-smoking ads and messaging, between 2000 and 2014, global sales of cigarettes increased by 8 percent, and a whole lot of those cigarette ends are ending up as trash. Since most of our litter eventually ends up in waterways, cigarette ends can surely pollute the surrounding environment. “It only takes a single cigarette end to pollute a liter of water,” TerraCycle founder, Tom Szaky, said. “Animals can also mistake littered cigarette ends for food.”

    So how do you go about turning all those poisonous ends into something useful? TerraCycle does this by first breaking them down into separate parts. They mix the remaining materials, such as the tobacco and the paper, with other kinds of rubbish, and use it on non-agricultural land, such as golf courses. The filters (过滤嘴) are a little harder. To recycle these, TerraCycle first makes them clean and cuts them into small pieces, and then combines them with other recycled materials, making them into liquid for industrial plastic products.

    They're now also expanding their recycling offerings to the rest of the 80 percent of household waste that currently can't be recycled, such as chocolate packaging, pens, and mobile phones. The goal is to use the latest research to find a way to stop so much waste ending up in landfill (垃圾填埋), and then get companies to provide money for the process. And so far, it's working.

    “We haven't found anything that we can't recycle,” communications director of TerraCycle, Albe Zakes, said. “But with the amount and variety of packaging and litter in the world, we are always looking for new waste streams to address.”

    NASA has a new job listing, and it's no joke. The US space agency is looking for a "joker" to join their planned mission to Mars.

    A mission to Mars is no laughing matter. On average, the red planet is 140 million miles (225 million kilometers) away from Earth. A trip there would take around eight months in a small spacecraft. And Mars has a communications delay of 20 minutes. This means that astronauts will have to wait 20 minutes for a reply, when an emergency happens.

    "When you're living with others in a confined space for a long period of time, such as on a mission to Mars, problems are likely to occur," Jeffrey Johnson, a scientist at the University of Florida, told The Guardian.

    This is probably why NASA wants an astronaut with a sense of humor. "These are people that have the ability to pull everyone together," Johnson said.

    In stressful situations, perhaps humor is a way to know we aren't alone. By laughing together, we share our stress. Then we can focus on our jobs instead of just worrying.

    There are other examples of team "clowns". One example is the journey to the South Pole led by Norwegian explorer Roald Amundsen. It was a difficult journey full of danger. Adolf Lindstrom, a cook at Amundsen's team, was a "clown". He made people laugh through the whole journey. Amundsen later wrote that Lindstrom was the most valuable member of the team.

    But if you're hoping that your favorite TV comedian will fly to Mars, that probably won't happen.

    "Being funny won't be enough to land somebody the job," Johnson said. "They also need to be an excellent engineer."

    Besides, they must be in top physical condition.

    Only about 30 percent of people in the US know how to perform CPR (心肺复苏术). Recently, a 9-year-old boy showed a Georgia woman how to perform CPR on her newborn baby.

    Susanna Rohm said she had experienced a parent's worst nightmare (噩梦) — her 2-month-old son, Isiah, was not breathing. "I noticed he looked pale. I looked at his arms and his legs and they were limp (无力的)," Rohm told a local newspaper. "Then I noticed that he looked like he wasn't alive." Indismay, she dropped and broke her cellphone. Rohm had to run into the street, screaming for help.

    "I had him in my arms and screamed over and over. Then I ran outside. I saw two boys playing across the street, and I yelled, 'Go and ask your parents to call 911,'" Rohm said. But the two boys were able to do more than that. Nine-year-old Ethan Wilson took action, showing Rohm how to perform CPR on little Isiah while ten-year-old Rocky Hurt helped as well.

    Rocky said he had learned the CPR technique from a poster in a health class at their school, Sedalia Park Elementary. "I was thinking we'd better give her a helping hand instead of getting scared," Ethan said. "I told her to push on the baby's chest five to ten times a minute with only two fingers, tilt back the baby's head, plug the baby's nose and breathe into the baby's mouth," Ethan said in an interview.

    At last, Isiah began crying and was breathing again. He spent two nights in a local hospital. "If the little boy hadn't shown me what to do right there, my baby would probably not be alive right now," Rohm said.