Nowadays more and more people are talking about geneticallymodified foods ( GM foods). GM foods develop from genetically modifiedorganisms (有机体), which havehad specific changes introduced into their DNA by genetic engineeringtechniques. These techniques are much more precise where an organism is exposedto chemicals to create a non­specific but stable change. For many people, thehigh­tech production raises all kinds of environmental, ethical, health andsafety problems. Particularly in countries with long farming traditions, theidea seems against nature.

In fact, GM foods are already very much a part of our lives.They were first put on the market in 1996. A third of the corn and more thanhalf the cotton grown in the U. S. last year was the product of biotechnology,according to the Department of Agriculture. More than 65 million acres ofgenetically modified crops will be planted in the US this year. The geneticgenie is out of the bottle.

However, like any new product entering the food chain, GM foodsmust be subjected to careful testing. In wealthy countries, the debate aboutbiotech is not so fierce by the fact that they have a large number of foods tochoose from, and a supply that goes beyond the needs. In developing countriesdesperate to feed fast­growing and underfed populations, the matter is simplerand much more urgent: do the benefits of biotech outweigh the risks?

The statistics on population growth and hunger are disturbing.Last year the world's population reached 6 billion. The UN states that nearly800 million people around the world are unhealthy. About 400 million women ofchildbearing age don' t have enough iron, which means their babies are exposedto various birth defeats.As many as 100 million children suffer from vitamin Adeficiency, a leading cause of blindness.

How can biotech help? Genetic engineering is widely used toproduce plants and animals with better nutritional values. Biotechnologistshave developed genetically modified rice and they are working on other kinds ofnutritionally improved crops. Biotech can also improve farming productivity inplaces where food shortages are caused by crop damage attributable to drought,poor soil and crop viruses.

    A woman's home is her castle. She cleans, cooks, decorates, repairs, works, plays and relaxes within the walls of her home. Sometimes women choose to stay at home to raise their children instead of working outside of the home. So you think she must be bored. I was one of those women.

    After finally getting pregnant, and giving birth, I found my home to be the best place. During the nine months I carried my daughter, my body had been broken and back. Being able to relax was just what my weak body needed. Besides, nursing was a rest because I home certainly cured my broken body.

     other families grow one child after the next was a horrible dream, when I didn't think I would ever be able to have my own child. But after having Alyssa, my own cute little baby girl, I was e to let my heart recover from the wounds. I watched and I valued every small change of her body and personality. Nothing was more exciting than time spent with my child. I loved to stay at home.

    Mentally I remained challenged with new opportunities every day. I learned to be perfect and organized. Everything worked like a clock. By 9:00 in the morning, the house was clean--beds made, bathrooms cleaned, house cleaned, and windows cleaned. I enjoyed finishing them quickly so that I could devote most of the day to my daughter. Between nursing, short breaks and staring at her, I thought of ways to improve my home and myself. Even with all the housework, every day was filled with so much fun!

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Dear Anne,

    I like your column very much. I met a girl four years ago at a gym. She was the one who originally approached me and we became good friends. Then one day, she made me really angry, so angry that I just left and we never saw each other again.

    Looking back, I really regret ending things that way. It was a cowardly act on my part, but I had a terrible temper at that time and let the smallest thing get to me. Recently, I've started thinking about her again and I looked up her e-mail address. I thought about writing to say “Hi” and apologize for what I did but I'm not sure. She could still be angry with me, or maybe she has forgotten me. I feel very lonely and I want to see her again. What should I do?

Tom

Dear Tom,

    She may still be angry with you, and she may have forgotten the friendship between you, but that doesn't mean she doesn't deserve an apology. Tom, how many of us have wished for the day that someone who treated us badly saw the light and finally owned up? But we rarely get that kind of expected result. So sure, e-mail her and say “Hi”.

    Tell her you have been thinking about her and just want to apologize for getting angry and being a coward by walking out on her. But you should remember if she thinks you're apologizing just because you are lonely, she might dismiss your sincerity. Therefore, don't mention that. If she wants to see you again, she'll make sure that happens.

    Even if she doesn't want to be your friend, I can assure you, she'll appreciate the gesture. And it might make you think twice next time you get angry.

Anne

    Where can you find a nice place to relax on holiday for both you and your children? Well, I suggest you try the beautiful and green Isle of Wight (IOW). The Isle of Wight is one of the main tourist attractions. Here is some information on a few of the attractions on the IOW.

    Dinosaur Isle

    It is located in Sandown, a seaside town on the southeast coast. It's a large, lovely museum, both fun and educational. Here you can see a large fossil collection of all kinds of dinosaurs, as well as a gift shop. You can walk into the past and then the future, learning about the history and the development of the civilization of dinosaurs that lived 120 million years ago.

    Robin Hill Country Park

    The park is in the beautiful countryside, and is suitable for children's parties and games. It has five new gardens, and offers great opportunities to see and take pictures of the rare red squirrels.

    The West of the Wight

    Here we have the Marine Aquarium, the Archaeology Exhibition and the Model Railway. They offer another opportunity to combine fun with learning. This is a great place to see ancient boats crossing the narrow strait between the island and the mainland.

    The Wight Bus Museum

    This museum is run completely by unpaid volunteers. It has a bus collection stored in what was once a warehouse(仓库). Most of the buses in the museum date back to around the 1910's.

    With all of these choices, what are you waiting for? IOW Tourism welcomes you!

    The world's first hydrogen-powered trains have begun running in Germany. They began carrying passengers Monday in Germany's northern Lower Saxony state. The new train will run 100-kilometer trips and can travel up to 140 kilometers an hour.

    A French railroad company called Alstom built the two trains. Team in Germany and France cooperated on the project, which was supported by the German government. The new train model ,called the Coradia ilint, signals the beginning of efforts in Germany and other nations to move away from pollution-producing diesel(柴油) trains.

    The Coradia iLint is designed to run on non-electrified train lines with low levels of noise.

    It uses a process that combines hydrogen and oxygen to produce electrical power. If the system produces more energy than the train needs at that time, it can store the extra energy in batteries. The only emissions (排放物) are water and steam.

    A single tank of hydrogen can run a Coradia iLint train for about 1,000 kilometers. This is very similar to the distance a diesel-powered train can run on with a single tank.

    Hydrogen-powered trains cost more than diesel trains to build. But Alstom officials say the operating costs are much lower. The company plans to provide another 14 Coradia iLint trains to Lower Saxony by 2021.

    The head of railroad operations in the area, Carmen Schwab, praised replacing diesel trains with hydrogen. She said the move was an important first step in using clean-burning technologies to reach climate protection goals.

    Officials say the area's many wind turbines (涡轮机)will produce part of the energy to create the hydrogen to power the trains.

    Alstom says several other European countries have also expressed interest in developing hydrogen train systems. France has already said it wants its first hydrogen train to be operating by 2022.

On a recent Wednesday, archaeologists announced a groundbreaking discovery that challenges our understanding of early human capabilities. They have unearthed what is believed to be the oldest wooden structure ever found, dating back nearly half a million years. This discovery at Kalambo Falls in northern Zambia, near the border with Tanzania, suggests that our ancestors were more technologically advanced than previously thought.

The wooden structure, which is exceptionally well-preserved, dates back at least 476,000 years. This timeline predates the emergence of Homo sapiens, as detailed in a study published in the journal Nature. The wood shows evidence of having been cut and shaped using stone tools, indicating a level of craftsmanship that was not previously attributed to these early humans.

The structure, which is thought to have functioned as a walkway or platform elevated above the seasonally wet ground, demonstrates a purposeful construction technique. A collection of wooden tools, including a wedge and a digging stick, were also found at the site, further supporting the idea of a developed woodworking tradition.

Larry Barham, an archaeologist at the University of Liverpool and the lead author of the study, described the structure as involving "the intentional shaping of two trees to create a framework of two interlocking supports." A notch was cut into one log, and another tree was shaped to fit through this notch, providing stability to the structure.

The use of wood by early humans was already known, but it was typically associated with basic tasks such as starting fires or hunting. However, the discovery at Kalambo Falls indicates a more sophisticated application of woodworking skills. Barham explained, "The structure involves the intentional shaping of two trees to create a framework of two interlocking supports," which required a level of planning and execution that suggests a higher cognitive ability.

The preservation of the wooden structure is remarkable, given that wood typically decays over time, leaving little trace for archaeologists to study. The high water levels at Kalambo Falls are believed to have played a crucial role in preserving the structure for centuries.

These findings from Kalambo Falls not only provide evidence of an early human ability to manipulate their environment but also suggest a more complex cognitive capacity among these early humans than what has been inferred from stone tools alone. Barham concluded, "The finds from Kalambo Falls indicate that these earlier humans, like Homo sapiens, had the capacity to alter their surroundings, creating a built environment." This discovery underscores the need to reassess our understanding of early human technological and cognitive development.