1 . With the attractive scenery and the possibility of a monster (怪物) sighting, Loch Ness is   the one of those rare destinations that engages everyone.

Urquhart Castle

Captured by Edward 1 in 1246, this prized castle changed hands between the Scots and English on several occasions. Though ruined today, it’s still possible to climb the Grant Tower and visit the battlements and prison cells. A cafe and visitor centre offer modern facilities in historic surroundings.

The Loch Ness Centre

For those who wish to digest the complete history of Loch Ness, this centre is particularly3 good at documenting the history of this mysterious stretch of water, including many attempts to search for Nessie, the infamous monster. It also holds curious artifacts (古器物) such as the diving suit worn by Lloyd Scott when he undertook his underwater marathon.

The Clansman Centre

At the south end of Loch Ness, this attraction uncovers the truth surrounding 18th-century family life. Audience members get the opportunity to put on Highland dress and there’s a demonstration on how weapons were used. The presentations take place within the recreated interior of a Highland house, adding atmosphere and authenticity (真实).

South Loch Ness Trail

This 36-mile route invites hikers along the quieter south side of Loch Ness, passing through three villages, and taking in the Falls of Foyers. Walkers hike a mix of minor roads and forest tracks, with highlights including Suidhe Viewpoint (a mountainous view at 1,200 feet). If it sounds too easygoing, then consider the Loch Ness 360° Trail instead for a more challenging, 80-mile route.

3 . People are always looking for lost cities and occasionally one is found: Borobudur in Indonesia, for example. But perhaps some of the places people look for never existed. Here are just a few famous mythical (传说中的)cities.

EI Dorado

EI Dorado is a story that began in 1573, when Spanish explorers found Muisca people in the mountains of what is now Colombia. They heard the story of a man who covered himself with gold and dived into a lake. Then people began to talk of EI Dorado —“the golden man”. Soon people started to think of EI Dorado as a place, too— a city of golden and amazing riches. Nowadays, the name “EI Dorado” is still used to mean “a place where you can get rich quickly”.   

Atlnti

There was once an island in the middle of the Atlantic Ocean. It was the mythical island of Atlantis. The people of the island were very rich, thanks to the natural resources on their island. For hundreds of years, they lived simple lives. But slowly they began to change. They started to want power. So the gods decided to destroy Atlantis. Suddenly, the island and its people were swallowed by the sea and were never seen again.

Shambhale

In the Tibetan Buddhist tradition, Shambhala is a mystical country that is hidden somewhere behind the Himalayas. Shambhala is a word from an old language that means “place of peace” or “place of happiness”. It is said that there is no war in Shambhala, and in the future, when the world is full of war, a huge army will come out of Shambhala, destroy the world’s bad rulers, and start a new Golden Age. Some people say this will happen in 2424.

5 . The commonly held view is that people arrived in North America from Asia via a land bridge once connecting the two continents at the end of the Ice Age around 13,000 to 16,000 years ago. But recent discoveries have suggested humans might have been there earlier. Researchers studying fossilized human footprints in New Mexico say that humans were there at least 23,000 years ago.

Matthew Bennett, a specialist in ancient footprints and author of a study on the new findings published in Science, and his colleagues studied 61 footprints by radiocarbon(放射性碳) dating layers of aquatic (水生的) plant seeds preserved above and below the footprints and accurately dated they were made 21,000 to 23,000 years ago. The people who made the footprints were living there in the last Ice Age when two massive ice sheets covering the continent and cold temperatures would have made a journey between Asia and Alaska impossible, indicating humans must have been there much earlier than previously thought.

According to their analysis of the footprints, they were likely made in soft ground at the edge of a wetland by children who were sent to do the work like fetching and catching by adults. Wind probably blew dust over the surface, accumulating in the prints, thus, leaving footprints that previously recorded.

Their finding also makes it possible to explore the older and more controversial sites. One such site is Chiquihuite Cave in central Mexico, where stone tools dating back to 30,000 years ago have been found.

David Rachal, an experienced geoarchaeologist (地质考古学家) thought the footprint dates provided by Bennett and his team looked extremely solid, with seeds providing very reliable and precise ages through radiocarbon dating. “You could not ask for a better setup,” said Rachal. However, he was puzzled that no artifacts, such as stone tools, had been found in the area. “We need to be cautious and more research needs to be done.” Rachal said.

7 . If there is a building which symbolizes a country—such as the Eiffel Tower for France and Sydney Opera House for Australia—then it has to be the Taj Mahal for India.

It was set up by Emperor Shah Jahan in 1653 in memory of his wife, Mumtaz Mahal. From the time they got married, they wouldn’t be separated. She followed him to wars, advised him on affairs of state, and was loved by his people for her good work. But she died in 1631 during childbirth. The emperor was heartbroken and had the Taj Mahal built as a sign of his love.

It took more than 20 years for the Taj Mahal to be built. Workers were brought in, not only from all over India, but from Central Asia too. A total of 20,000 people worked on the building.

In 1657, Shah Jahan fell ill, and in 1658 his son Aurangzeb, imprisoned (囚禁) his father and seized power. Shah Jahan stayed in prison until his death in 1666. He was finally buried there with his wife he could never forget.

The Taj Mahal is definitely worth more than a single visit. As it is built with white marble stones, its character changes in different lights. It looks more beautiful at sunrise and sunset. At sunset, for example, the color of the Taj changes from white to yellow, then to pink. As the moon rises, it turns a silvery white.

To show respect to the Taj, tourists are asked to take off their shoes during their visit.

8 . A dam is a man-made structure built across a river. Most dams are built to control a river’s water flow, improve navigation and control flooding. However, some dams are built to produce hydro-electric power.

Hydro-electric power is produced as water passes through a dam, and into a river below. The more water that passes through a dam, the more energy that is produced. Once a dam is built, a man-made lake is created behind the dam.

Electricity is produced by a kind of equipment called a turbine(涡轮机).Turbines contain metal coils(线圈)surrounded by magnets(磁铁). When the magnets move round rapidly over the metal coils, electricity is produced. Turbines are located inside dams. The falling water makes the magnets go around the coils.

Dams provide clean energy, but they can also harm the environment. Species that use rivers to reproduce are often hurt by dams. In the northwest of the US, the population of fishes has dropped from 16 million to 2.5 million since hydro-electric plants were built on the Columbia River. Dams all over the world have hurt some species.

The highest dam in the United States is located near Oroville, California. The Oroville Dam towers 230 meters and is more than a mile wide. This dam was built in 1968, 22 years after the Hoover Dam. The Hoover Dam, on the Nevada-Arizona border controls the Colorado River. It is 221 meters high and has 2.6 million hectare-meter(公顷)of water.

The highest dam in the world is the Nurek Dam on the Vakhsh River in Tajikistan, a country in central Asia. This dam is 300 meters tall.

10 . Close to the North Pole, remote and rocky Plateau Mountain in the Norwegian archipelago of Svalbard seems an unlikely spot for any global effort to safeguard agriculture. In this cold and deserted environment, no grains, no gardens, no trees can grow. Yet at the end of a 130-meter-long tunnel cut out of solid stone is a room filled with humanity’s most precious treasure, the largest and most diverse seed collection—more than a half-billion seeds.

A quiet rescue mission is under way. With growing evidence that unchecked climate change will seriously affect food production and threaten the diversity of crops around the world, the Svalbard Global Seed Vault represents a major step towards ensuring the preservation of hundreds of thousands of crop varieties. This is a seed collection, but more importantly, it is a collection of the traits found within the seeds: the genes that give one variety resistance to a particular pest and another variety tolerance for hot, dry weather.

Few people will ever see or come into contact with the contents of this vault. In sealed boxes, behind multiple locked doors, monitored by electronic security systems, enveloped in below-zero temperatures, and surrounded by tons of rock, hundreds of millions of seeds are protected in their mountain fortress. Frozen in such conditions inside the mountain, seeds of most major crops will remain viable for hundreds of years, or longer. Seeds of some are capable of retaining their ability to grow for thousands of years.

Everyone can look back now and say that the Seed Vault was a good and obvious idea, and that of course the Norwegian government should have approved and funded it. But back in 2004, when the Seed Vault was proposed, it was viewed as a crazy, impractical, and expensive idea.

We knew that nothing would provide a definite guarantee. But we were tired, fed up, and frankly scared of the steady, greater losses of crop diversity. The Seed Vault was built by optimists who wanted to do something to preserve options so that humanity and its crops might be better prepared for change. If it simply resupplied seed gene banks with samples those gene banks had lost, this would repay our efforts.

The Seed Vault is about hope and commitment——about what can be done if countries come together and work cooperatively to accomplish something significant, long-lasting, and worthy of who we are and wish to be.