When my students ask me why I live in a tiny house, they ask it in light of all the “sacrifices(牺牲)”I an making. They know that I have moved from a large apartment in the city to a small custom-built home on wheels in the backyard woods. They know I forego running water, Internet connection, sewage(下水道), and reliable phone reception.

    However, it was possible for me to be truly happy while living with very few material things. My body responded well, in health, fitness and mood, to a schedule more consistent(一致的)with the natural day and night cycle. Observing the daily sunset, hosting friends for days at a time, reading, writing letters to my families and friends and exploring natural wonders in my spare time all were free and invaluable experiences.

    What was necessary to my survival proved to be a rather short list-healthy food, clean and drinkable water, heat source, weather-protecting shelter, weather-suitable clothing, equally important friends and mental and physical stimulations(刺激).

    When I returned to life in the US, I couldn't help but sense a deep and uneasy belief that life suddenly changed. I felt disconnected with many things- the earth, others, my food source, my waste disposal, the natural cycle of my body and the productive interests. These are the things I once cared for but now find myself too busy to enjoy. How was it that I was earning literally 40 times my Peace Corps salary and was less healthy, satisfied and intentional in my daily schedule? I found myself asking-what is it to be rich anyway? Therefore, last August I let go of most of my possessions and moved into a tiny house on wheels because I wanted to see if I could live a more enjoyable lifestyle. So far so good. No inconvenience has made up for the many positive benefits that continue to come from this change in lifestyle. I believe that I have made the right decision.

    You may think that sailing is a difficult sport, but it is really not hard to learn. You do not need to be strong. But you need to be quick. And you need to understand a few basic rules about the wind.

    First, you must ask yourself, “Where is the wind coming from? Is it coming from ahead or behind or from the side?” You must think about this all the time on the boat. The wind direction tells you what to do with the sail.

    Let's start with the wind blowing from the behind. This means the wind and the boat are going in the same direction. Then you must always keep the sail outside the boat. It should be at a 90° angle to the boat. Then it will catch the wind best.

    If the wind is blowing from the side, it is blowing across the boat. In this case, you must keep the sail half way outside the boat. It should be at a 45°angle to the boat. It needs to be out far enough to catch the wind, but it shouldn't flap(摆动). It shouldn't look like on a flagpole. If it is flapping, it is probably out too far, and the boat will slow down.

    Sailing into the wind is not possible. If you try, the sail will flap and the boat will stop. You may want to go in that direction. It is possible, but you can't go in a straight line. You must go first in one direction and then in another. This is called tacking. When you're tacking, you must always keep the sail inside the boat.

    When seeing the doctor, you feel better to know you will get some medicine. But the doctor knows that medicine is not always needed. Sometimes all a sick person needs is some reassurance (安想) that all will be well. In such cases the doctor may prescribe a placebo.

    A placebo is a sugar pill, a harmless shot, or an empty capsule. The patient thinks it is medicine and begins to get better. How does this happen?

    The study of the placebo opens up new knowledge about the way the human body can heal itself. It is as if there was a doctor in each of us. The doctor will heal the body for us if we let it. But it is not yet known just how the placebo works to heal the body. Some people say it works because the human mind fools itself. These people say that if the mind is fooled into thinking it got medicine, then it will act as if it did, and the body will feel better.

    Placebos don't always work. The success of this treatment seems to rest a lot with the relationship between the patient and the doctor. If the patient has lots of trust in the doctor and if the doctor really wants to help the patient, then the placebo is more likely to work. So in a way, the doctor is the most powerful placebo of all.

    A placebo can also have bad effects. If patients expect a bad reaction to medicine, then they'll also show a bad reaction to the placebo. Some doctors still think that if the placebo can have bad effects it should never be used. They think there is still not enough known about it.

    The strange power of the placebo does seem to suggest that the human mind is stronger than we think it is. There are people who say you can heal your body by using your mind. And the interesting thing is that even people who swear this is not possible have been healed by a placebo.

Learning New Vocabulary during Deep Sleep

    Sleeping time is sometimes considered unproductive time. This raises the question whether the time spent asleep could be used more productively, e.g. for learning a new language? Up-to-now sleep research focused on the stabilization and strengthening of memories that had been formed during wakefulness. However, learning during sleep has rarely been examined. There is enough evidence for wake-learned information undergoing a revision by replay in the sleeping brain. The replay during sleep strengthens the still weak memory and leaves the newly acquired information in the pre-existing store of knowledge.

    If re-play during sleep improves the storage of wake-learned information, then first-play, i.e. the initial processing of new information, should also be possible during sleep.

    The research group of Katharina Henke examined whether a sleeping person is able to form new semantic（语义的）associations between played foreign words and translation words during the brain cells' active states, the so-called "Up-states." It turned out to be that what they thought was reasonable. When we reach deep sleep stages, our brain cells progressively coordinate their activity. During deep sleep, the brain cells are commonly active for a brief period of time before they jointly enter into a state of brief inactivity. The active state is called "Up-state" and the inactive state "Down-state". The two states alternate（交替）about every half-second.

    New evidence for sleep-learning challenges current theories of sleep and theories of memory. The concept of sleep that we are separated from the physical environment is no longer reasonable. "It's false that complex learning be impossible during deep sleep," says Simon Ruch, co-first-author. "In how far and with what consequences deep sleep can be applied for the acquisition of new information will be a topic of research in upcoming years," says Katharina Henke.

    The research group of Katharina Henke is part of the Interfaculty Research Cooperation (IRC). Thirteen research groups in medicine, biology and psychology are part of the IRC. The aim of these research groups is to gain a better understanding of the mechanisms（原理）involved in sleep and consciousness.

About 50 feet from shore, two brothers were fighting for their lives, their mouths barely able to stay above the water. Thick fog made it difficult for beach goers to see the guys, but the screams were unmistakable and every second counted. The brothers, aged 15 and 20, were wearing shorts and T-shirts, unsuitable for a November day, let alone the 50-degree water. Keven Harder, a supervising ranger, told the North Coast Journal that swimming in such a temperature "will take the fight right out of you."

Luckily, four surfers in wet suits were nearby. Narayan Weibel, Spenser Stratton, and Adrian York, all 16, along with Taj Ortiz-beck, 15, were on their surf boards riding on waves when they heard the cries. They turned and saw two bobbing heads and four flailing arms. "We looked at each other and knew they were about to drown, " Weibel said.

Weibel, Stratton, and Ortiz-beck paddled toward the distressed swimmers while York headed to shore to call 911. As the surfers drew close, the brothers were struggling. "It was pretty stressful, but there wasn't any time to think about it," Ortiz-beck said. He pulled up alongside the younger brother. Grabbing him under his arms, he raised him up onto the board. Stratton and Weibel, meanwhile, were straining(竭力)to help the elder brother. He was large, about 250 pounds, and panicked. Fortunately, York arrived in time to help get the elder brother atop the second board. The surfers then paddled several minutes through rough water to the medical help waiting onshore. The brothers were scared but fine.

"When we get a call like this one, it's usually too late by the time we get there, " said Dillon Ceavenger, the first responder. "I can't say enough about what these boys did. They were willing and prepared to risk their lives."

Do you want to learn the material you're studying—like, reallylearn it? {#blank#}1{#/blank#}One learning theory suggests that if you overlearn, you'll gain the ability to do something without having to think about it — and eventually obtain more knowledge. Here's what overlearning is and how to do it.

What is overlearning?

Simply put, overlearning means studying something even once you're sure you know it. Don't stop reviewing or studying just because you succeeded in memorizing something. {#blank#}2{#/blank#}

The purpose of overlearning is to make the task easy to ensure it is completed to a high standard with no stress. For example, a student wants to pass their spelling test which has 10 words. Knowing about overlearning, she doesn't just memorize each word, but also learns about the origins of each word. {#blank#}3{#/blank#} Similarly, a teacher wanting to learn about teaching strategies might not simply read one book — they may read ten books, watch videos, attend lectures (and maybe even write their own book).

How do you overlearn?

{#blank#}4{#/blank#} For instance, when using the Leitner method, always review all the flashcards you're assigned on a particular day, even if you feel like passing over them because you got them right last time. Repeatedly going over material you know well is the key to overlearning and eventual automatic recall.

Schedule blocks of time in your week for reviewing materials you've already mastered. {#blank#}5{#/blank#} Continually reintroducing familiar ideas to yourself will dig them deeper into your long term memory.