The holidays are a time to give. These organizations are looking for volunteers and donations (捐赠). Read on to learn more about them. Then, find out how you can help.

    American Red Cross

    This holiday season, your donation can make a difference at home and abroad. The American Red Cross is making it easy to help people who have experienced natural disasters (灾害), members of the U.S. armed forces, and children all over the world. With just one click (点击), you can give the gift of caring.

    National Military Family Association

    Each year hundreds of Americans serve both at home and abroad to keep our country safe. This holiday season, we can help serve them. Through donations, National Military Family Association helps to provide military members and their families with scholarships, family retreats, camp programs for kids, and more.

    Network for Good

    This website allows its users to donate to organizations and discover volunteer chances. After natural disasters, the Network for Good provides a system of help and support for those in need. The website also offers tips to kids who want to give. Visit the website to find out how you can help make someone's holiday season shine bright.

    Make-A-Wish Foundation

    Sometimes all it takes is one wish made come true to make someone smile. The work of Make-A-Wish Foundation is to make the wishes come true. Through support and donations, the foundation has made dreams come true for hundreds of thousands of children with serious illnesses.

    If you want to help others, don't wait for a better time. Help now! Your help will be valued highly.

    Dr. Sasaki knew the first-night effect probably has something to do with how humans evolved.

    The puzzle was what benefit would be gained from it when performance might be affected the following day. She also knew from previous work conducted on birds and dolphins that these animals put half of their brains to sleep at a time so that they can rest while remaining alert enough to avoid predators (捕食者). This led her to wonder if people might be doing the same thing. To take a closer look, her team studied 35 healthy people as they slept in the unfamiliar environment of the university's Department of Psychological Sciences. The participants each slept in the department for two nights and were carefully monitored with techniques that looked at the activity of their brains. Dr. Sasaki found, as expected, the participants slept less well on their first night than they did on their second, taking more than twice as long to fall asleep and sleeping less overall. During deep sleep, the participants' brains behaved in a similar manner seen in birds and dolphins. On the first night only, the left hemispheres (半球) of their brains did not sleep nearly as deeply as their right hemispheres did.

    Curious if the left hemispheres were indeed remaining awake to process information detected in the surrounding environment, Dr. Sasaki re-ran the experiment while presenting the sleeping participants with a mix of regularly timed beeps (蜂鸣声) of the same tone and irregular beeps of a different tone during the night. She worked out that, if the left hemisphere was staying alert to keep guard in a strange environment, then it would react to the irregular beeps by stirring people from sleep and would ignore the regularly timed ones. This is precisely what she found.

    A lady in a faded grey dress and her husband, walked into the Harvard University president's outer office.

    "We want to see the president,"the man said softly.

    The president met with the couple.

    The lady told him, "We had a son who attended Harvard for one year. He love Harvard. He was happy here. But about a year ago, he was accidentally killed. We would like to build a memorial（纪念物）to him, somewhere on campus."

    The president was not touched. "Madam, we can not put up a statue for every person who attended Harvard and died."

    "Oh, no," the lady explained. "We do not want a statue. We thought we would like to give a building to Harvard."

    The president rolled his eyes, "A building! Do you have any idea how much a building costs?"

    For a moment the lady was silent. Then she turned to her husband and said quietly, "How much does it cost to start a university? Why do not we just start our own?"

    Her husband nodded.

    Mr. And Mrs. Stanford got up and walked away, travelling to California where they established Stanford   University's memorial to their son.

    Your local grocery store is a psychological minefield (布雷区), where even the bananas are ripe with mystery.

    ⒈Southpaws (左撇子) have an invisible (看不见的) advantage

    You've probably seen that stores keep go-to items—produce, meats, dairy—on the outer edge. But did you notice that most of them are set up to make you run counterclockwise (逆时针)? Ninety percent of us are right-handed, so we buy more when it's counterclockwise. You'll also often find the dairy section in the back left corner：Because dairy is likely on your list, stores make sure you take the longest route to get there. In fairness, it's also a more convenient place to put a fridge.

    ⒉Everything is in its place

    It's safe to say that nothing you see on a shelf is there by chance. The cookies on sale at the end of a passage are likely the result of smart product placement. More expensive items are usually placed at an adult's eye level, while colorful treats and other products for kids are positioned lower—to catch the attention of children.

    ⒊Time goes by so slowly

    Stores rarely have windows or clocks. With no reference to the outside world, customers can easily lose track of how long they've been there so that they can buy more. Grocery stores may use another trick to control your sense of time: small floor tiles (瓷砖).

Inspired by the movement to protect the Carmanah Valley and Clayoquot Sound, I decided to devote myself to producing images for conservation full-time in 1992. Since that time my work has taken me all over the world and my photos have appeared in many major magazines. However, many of my most rewarding moments have come from working on projects in British Columbia, Canada, and sharing those images in slide show tours I have given throughout Canada, the U. S. and Europe.

The more I travel and photograph in other parts of the world, the more I have come to realize the wilderness we have in Canada is truly special and rare.

I have always felt that as a photographer my goal is to approach the natural environment with the sense of wonder and curiosity that comes so naturally to children. This, I believe, is one of the basic keys not just to producing meaningful images, but more importantly, to gaining a full appreciation and enjoyment of the natural world.

I find that not only my best images, but also my most enjoyable experiences in nature, occur when I have an open mind and follow my intuition (直觉). When I feel drawn to a certain scene, I try to make the scene simple and not include anything that is not relevant. I also try all ways to look for beautiful light. Early morning and the end of the day almost always produce light that results in more pleasing images than those taken under the strong light in the middle of a sunny day. Soft cloudy skies are wonderful for photographing all day, especially in our beautiful forests or for small subjects like wildflowers. Rain, storms, and snow also provide wonderful opportunities for new and different kinds of images.

Before traveling to Lake Tahoe, make sure your plans are in order. Here are several vacation packages to the area offered online. Easily find the perfect route or simply build your own to experience the wonders of Lake Tahoe.

Get Outdoors in Lake Tahoe Package

Get outdoors and explore! With this fun vacation package, you can stay in the Lake Tahoe area for three nights and have a few adventures along the way. This package also features Lake Tahoe Sport Fishing, allowing guests to get out and fish!

Package includes: 3 nights' lodging（住宿）in your choice of over 33 hotels.

Lake Tahoe Romantic Getaway Package

Lake Tahoe Romantic Getaway Package is perfect for people who want to have a romantic time. It also includes the Lake Tahoe Emerald Bay Sunset Cruise on the Bleu Wave, which allows you the chance to see the beautiful surroundings of Lake Tahoe.

Package includes: 4 nights' lodging in your choice of over 11 hotels.

Lake Tahoe Family Vacation Package

Due to the amazing sights, there are lots of activities in this package to take part in. If your next trip happens to be in the Lake Tahoe area, then consider booking the Lake Tahoe Family Vacation Package. Everyone is suitable to visit.

Package includes: 3 nights' lodging in your choice of over 11 hotels.

Lake Tahoe Weekend Getaway Package

Lake Tahoe Weekend Getaway Package is great for people of all ages, so this is a great choice for families. It also includes a Lake Tahoe Emerald Bay Cruise, which takes place aboard the Bleu Wave.

Package includes: 2 nights' lodging in your choice of over 22 hotels.