5 .

It was a day just like every other day. I woke up early in the morning and went to run on Mount Gracious with my dog, Bubbles. As I ran up the mountain, with my dog following close behind, I felt energetic and refreshed. Running in a natural environment never failed to make me feel alive. When I reached the top, I drank some water and enjoyed the beautiful sunrise. This scene always took my breath away, no matter how many times I had seen it.

Having rested enough, Bubbles and I made our way back down the mountain. As we were running downhill, I saw an unfamiliar path and decided to explore the area. The path was full of rocks. It was not easy to walk.

Suddenly, I slipped on a muddy patch, rolling down five meters before I managed to grab hold of an exposed root of a huge tree. I was safe for now. However, I was seriously injured. My knees were badly hurt. My right foot was also dislocated (脱臼). I knew for sure I would be unable to make my way up or down the mountain without help. I called out to Bubbles and he barked loudly from above. It seemed like he understood that I needed help. He looked down at me pitifully before disappearing from sight.

As night fell, panic (恐慌) set in and scary thoughts went through my mind. There were many things that I had got to do. I couldn't die! This would not have happened if I had stuck to my usual path.

I was losing hope when I heard barking. It was Bubbles. I rubbed my eyes as I struggled to keep awake. But there was silence. Who could it be? Was I hallucinating (产生幻觉)? Then I heard some voices and more barking. Yes. Help was near, I knew. I could count on my dog to get help.

Soon, I heard my parents calling my name.

Later, my parents told me what Bubbles had done to get help.

8 . The Ancient Chinese Game of Go

Weiqi, known in English as Go, is one of the four skills that an ancient Chinese intellectual (知识分子) could possess. It has a history of well over 4,000 years in China and remains popular. Culturally, this activity is really “more than just a game”.

    1     One of China’s classics, The Romance of the Three Kingdoms, describes the famous general Guan Yu playing Go while receiving surgery on his arm.

History books have recorded quite a number of ardent Go fans from each dynasty. Today, there are still many in China, Japan and South Korea. Wu Yulin, a professional, explains its attraction, “In Go, you can learn the dialectics (辩证法) and military stratagems.     2     There are numerous variations within the game and you can never reach the bottom of it.”

    3     Hua Yigang, Secretary General of the China Go Association, remarks on the character-building qualities of Go. “You have to become entirely calm, otherwise you can’t play it. You have to be very strong of mind.     4     You might make mistakes during a game, and then have to readjust your mentality in order to fight to the end.”

In fact, all of our minds can benefit from playing Go, which officially has the capacity to make you smarter. Research has shown that children who play Go have the potential for greater intelligence.     5    

Today, the number of Go fans in China is at 36 million and rising. Some universities like Beijing University are even offering courses in Go to undergraduates.

9 . With the help of new devices on mice, scientists are using light to switch nerve cells on and off in mice’s brains to explore the animals’ social behavior, a new study shows.

The new devices rely on optogenetics(光遗传学), a technique in which researchers use bursts of light to stimulate or control the brain nerve cells, often using tailored viruses to genetically correct cells so they respond to light. Scientists have applied optogenetics to explore neural(神经的) circuits in mice and other lab animals to come to a conclusion on how they might work in humans. Optogenetic devices often feed light to neurons via fiber-optic cables, but such things can influence natural behaviors and social interactions. While scientists recently developed implantable(可植入的) wireless optogenetic devices, these depend on relatively simple remote controls or limited sets of preprogrammed instructions.

These new fully implantable optogenetic devices can enable more complex research. Specifically, the researchers can adjust each device’s programming during the course of experiment. “So you can target what an animal does in a much more complex way,” says Genia Kozorovitskiy, a researcher at Northwestern University.

These devices are battery-free, wirelessly powered by the same high-frequency radio waves used to remotely control the intensity, duration and timing of the light pulses. The devices also allow scientists to control four different neural circuits in an animal simultaneously, thanks to LEDs that give out four colors——blue, green, yellow and red——instead of just one.

The widely available wireless technology used in this work, the same now used in contactless payment with credit cards, could allow broad adoption across the neuroscience community “without extensive specialized hardware”, says Philipp Gutruf at the University of Arizona. “That means that we might see these devices in many labs in the near future, enabling new discoveries.”

10 . It may not be rocket science, but researchers have found aerospace engineers and neurosurgeons (神经外科医生) are not necessarily brighter than the general population.

Researchers examined data from an international group of 329 aerospace engineers and 72 brain surgeons who completed 12 tasks online using the Great British Intelligence Test.

The tasks examined various aspects of cognition (认知), including planning and reasoning, working memory, attention, and emotion processing abilities. The researchers then compared the results against those previously gathered from more than 18,000 members of the British public.

The findings, which were recently published, reveal that only neurosurgeons showed a significant difference, with quicker problem-solving speed but slower memory recall compared with the general population. “The difference in problem-solving speed exhibited by neurosurgeons might arise from the fast-paced nature of neurosurgery, which attracts those with a pre-existing talent for rapid processing, or it could be, though less likely, a product of training for rapid decision-making in time-critical situations,” the researchers noted.

The researchers said the study was, in part, carried out to lay to rest the question of whether one of the professions had the intellectual upper hand-a tension made famous by a comedy show in which a confident neurosurgeon is slapped down by an aerospace expert who says, “Brain surgery... it’s not exactly rocket science, is it?”

However, the team found few differences between the cognitive abilities of aerospace engineers and neuroscientists, although the results suggest the former had higher scores for attention and mental control—such as turning objects in one’s head—while neurosurgeons showed higher scores in semantic (语义的) problem solving—such as definitions of rare words.

“Essentially what we think it shows is that everyone has a range of skills, some people are better at some things and other people are better at other things, and it is very difficult to be better in everything across the board,” said Aswin Chari, an author of the study.