People are being lured(引诱)onto Facebook with the promise of a fun and free service without realizing they're paying for it by giving up large amounts of personal information. Facebook then attempts to make money by selling their data to advertisers that want to send targeted messages.

    Most Facebook users don't realize this is happening. Even if they know what the company is up to, they still have no idea what they're paying for Facebook, because people don't really know what their personal details are worth.

    The biggest problem, however, is that the company keeps changing the rules. Early on, you could keep everything private. That was the great thing about Facebook—you could create your own little private network. Last year, the company changed its privacy rules so that many things—your city, your photo, your friends' names—were set, by default(默认), to be shared with everyone on the Internet.

    According to Facebook's vice-- president Elliot Schrage, the company is simply making changes to improve its service, and if people don't share information, they have a “less satisfying experience.”

    Some critics think this is more about Facebook looking to make more money. Its original business model, which involved selling ads and putting them at the side of the page, totally failed. Who wants to look at ads when they're online connecting with their friends?

    The privacy issue has already landed Facebook in hot water in Washington. In April, Senator(议员) Charles Schumer called on Facebook to change its privacy policy. He also urged the Commission to set guidelines for social-networking sites. “I think the senators rightly communicated that we had not been clear about what the new products were and how people could choose to use them or not to use them,” Schrage admits.

    I suspect that whatever Facebook has done so far to invade our privacy, it's only the beginning, which is why I'm considering deactivating(撤销)my account. Facebook is a handy site, but I'm upset by the idea that my information is in the hands of people I don't know. That is too high a price to pay.

    Pacific Science Center Guide

    Visit Pacific Science Center's Store

    Don't forget to stop by Pacific Science Center's Store while you are here to pick up a wonderful science activity or souvenir to remember your visit. The store is located(位于) upstairs in Building 3 right next to the Laser Dome.

    Hungry?

    Our exhibits will feed your mind, but what about your body? Our café offers a complete menu of lunch and snack options, in addition to seasonal specials. The café is located upstairs in Building 1 and is open daily until one hour before Pacific Science Center closes.

    Rental Information

    Lockers are available to store any belongings during your visit. The lockers are located in Building 1 near the Information Desk and in Building 3. Pushchairs and wheelchairs are available to rent at the Information Desk and Denny Way entrance. ID required.

    Support Pacific Science Center

    Since 1962, Pacific Science Center has been inspiring a passion(热情) for discovery and lifelong learning in science, math and technology. Today, Pacific Science Center serves more than 1.3 million people a year and brings inquiry-based science education to classrooms and community events all over Washington State. It's an amazing accomplishment and one we cannot achieve without generous support from individuals, corporations, and other social organizations. Visit pacificsciencecenter.org to find various ways you can support Pacific Science Center.

    Americans gave nearly $300 billion away last year. Do you know the reason? Beyond the noble goals of helping others, it is that giving will make them happier.

    It is a fact that givers are happier people than non-givers. According to the Social Capital Community Benchmark Survey, a survey of 30,000 American households, people who give money to charity are 43% more likely than non-givers to say they are "very happy" about their lives. Similarly, volunteers are 42% more likely to be very happy then non-volunteers.

    The happiness difference between givers and non-givers is not due to differences in their personal characteristics, such as income or religion. Imagine two people who are identical in terms of income and faith, as well as age, education, politics, sex, and family circumstances, but one donates money and volunteers, while the other does not. The giver will be, on average, over 40 percentage points more likely to be very happy than the non-givers.

    A number of studies have researched exactly why charity leads to happiness. The surprising conclusion is that giving affects our brain chemistry. For example, people who give often report feelings of euphoria, which psychologists have referred to as the "Helper's High". They believe that charitable activity produces a very mild version of the sensations people get from drugs like morphine and heroin.

    Of course, not only does giving increase our happiness, but also our happiness increases the possibility that we will give. Everyone prefers to give more when they are happy. Researchers have investigated this by conducting experiments in which people are asked about their happiness before and after they participate in a charitable activity, such as volunteering to help children or serving meals to the poor. The result is clear that giving has a strong, positive causal impact on our happiness, so does happiness on giving

    Charity Cycling UK has recently launched a campaign to raise awareness of dooring after discovering that many people don't know what it is and those that do seem to think it's a joke. Dooring happens when a driver or passenger opens the door into another road user - typically a cyclist - without looking for other road users.

    Cycling UK's chief executive Paul Tuohy told Gloucestershire Live, "Some people seem to see car dooring as a bit of a joke, but it's not and can have serious consequences. Cycling UK wants to see great awareness made about the dangers of opening your car door, and people to be encouraged to look before they open."

    The charity says 2,009 of the 3,000 injuries were sustained(遭受) by cyclists, resulting in five deaths but says this might not be the full extent of the dangers.

    Cycling UK says not all car dooring incidents will be attended by police, so the charity has written to transport minister Jesse Norman calling for a public awareness campaign urging all drivers to look before opening vehicle doors. One of the ways that the charity suggests could prevent injuries through dooring is the "Dutch Reach", where people leaving a vehicle reach over and use the non-door side hand to open the door.

    Cycling UK also suggests serious laws and advice on safer road positioning for people who cycle.

    Mr Tuohy said, "In the Netherlands they are known for practising a method, known sometimes as the 'Dutch Reach', which we think could be successfully encouraged in the UK."

    "Cycling UK has written to the Department for Transport asking them to look into this, and stress the dangers of 'car dooring' through a public awareness THINK style campaign."

    If you're really concerned about opening a door into the path of a cyclist coming behind you, consider using what's known as the "Dutch Reach" to open the door. That will naturally turn you in your seat and give you a much better view of what's coming up alongside the car.

Famous Modern Chinese Buildings

    Beijing International Airport

    The first place most visitors see when they arrive in China is Beijing International Airport. The airport was constructed in the 1950s. It has an indoor garden, a children's playground, and over 70 food businesses in Terminal 3 alone.

    Shanghai World Financial Center

    Completed in 2008, SWFC took over 10 years to complete due to financial shortages and construction delays. Since its completion, it has won countless architectural awards.

    Tourists are welcome at SWFC's viewing platform, which at 474 meters above ground is the world's highest closed viewing platform.

    The Water Cube

    It was constructed for use during the Beijing 2008 Summer Olympics. Now visitors can express surprise at the architecture of the building. They can enjoy the indoor atmosphere as well.

    Among the offerings of the Water Cube are a restaurant and bar, a shopping area, and Water World, a family water park

    The Bird's Nest, Beijing

    It was designed mainly for the 2008 Summer Olympics. It can hold up to 80,000 people and has been used for a winter theme park. Nowadays, its main income is as a tourist attraction. It draws more than 20,000 tourists every day.

    National Center for the Performing Arts

    It was completed in 2007. The building is surrounded by a man-made lake, requiring guests to enter via an underground hallway. It is home to an Opera Hall, Music Hall, and Theater.

Napa Valley is home to some of California's most beautiful hiking trails. Whether you're a seasoned hiker or a beginner, these trails are perfect for a day trip.

Robert Louis Stevenson State Park

Named after the famous author who spent his honeymoon in the area, it offers some of the most scenic hiking trails in Napa Valley. The park features over 5 miles of hiking trails, catering to hikers of all skill levels. You can even see the San Francisco Bay on a clear day.

Skyline Wilderness Park

It is a popular hiking destination in Napa Valley, featuring over 25 miles of hiking trails that offer magnificent views of the valley. On a clear day, you can even see the Golden Gate Bridge. The park is also home to a variety of wildlife, including deer, coyotes and mountain lions.

Westwood Hills Park

It is a hidden gem in Napa Valley. The park boasts over 4 miles of hiking trails, ranging from easy to difficult, making them ideal for a day trip. A wide range of wildlife, including deer and wild turkeys, also lives in this area.

Bothe-Napa Valley State Park

The park is located in the heart of the beautiful Napa Valley wine country and has over 10 miles of trails. It is a paradise for outdoor enthusiasts. It offers easy access to swimming areas and picnic spots. And if you can't get enough of the outdoor activities here, there is a camping site that can be booked for overnight stays.