3 . Here’s an idea whose time has come: A flu shot that doesn’t require an actual shot.

For the first time, researchers have tested a flu vaccine patch(疫苗贴) in a human clinical(临床的) and found that it delivered as much protection as a traditional injection（注射）. Doctors and public health experts have high hopes that it will increase the number of people who get immunized(免疫的) against the flu.

Seasonal flu is responsible for up to half a million deaths around the world each year according to the World Health Organization. A team led by Georgia Tech engineer Mark Prausnitz has come up with an alternative method that uses “microneedles”. These tiny neddles on a patch are very small. Yet they’re big enough to hold vaccine for three types of flu.

None of the study volunteers had serious side effects. The group that got patches had mild skin reactions that were not seen in the regular needle group, while the volunteers in the regular needle group were more likely to experience pain. Overall, 70 percent of the volunteers who got vaccine patches said they’d rather use them again than get a traditional flu shot. The study authors declared it a success on all fronts.

The biggest beneficiaries(受益人) could be people in low- and middle- income countries, where flu vaccines are hard to come by. Reducing pain is nice, but other benefits—the patch costs less, is easier to transport, doesn’t reqire refrigeration, can be self-administered and doesn’t cause waste of needles- are even better.

“Microneedle patches have the potential to become ideal candidates for vaccination programs,” wrote Katja Hoschler and Maria Zambon of Public Health England.

4 . Today we know Antarctica as an extreme environment containing ice and snow. But new research provides evidence that the area had a rainforest in the past.

The researchers collected a piece of Earth sediment (沉淀物) from under the seafloor off the coast of Antarctica. In the sediment they discovered forest material that was estimated to be about 90 million years old. This would have been in the Cretaceous Period, when dinosaurs were the main land animals. The sediment was removed by scientists on the research icebreaker RV Polarstern in the Amundsen Sea near Pine Island Glacier.

Johann Klages is a geologist with the Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research in Germany. He was the lead writer of a study on the findings, published in the journal Nature. He said the sediment was collected from a depth of about 30 meters below the ocean floor. Klages said an examination showed that the material didn’t form in the ocean.

The researchers estimate that the area—about 900 kilometers from the South Pole—had average yearly temperatures of about 12 to 13 degrees Celsius. During the warmest summer months, average temperatures likely reached between 20 and 25 degrees Celsius. The soil included fine dirt particles (颗粒) and hard clay, as well as substances linked to at least 65 different kinds of plants, the study found. Klages added that the plants included trees, ferns and flowering plants. While no animal remains were found, Klages said there were likely dinosaurs, flying reptiles (爬行动物) and many insects in the environment.

The research represents new evidence of the major climate changes Earth has experienced in the past—and is currently undergoing today. The soil in the sediment dates back to the planet’s warmest period of the past 140 million years, with sea level about 170 meters higher than today. The researchers said that the rainforest environment in Antarctica was especially surprising because each year, the area experiences a four-month polar night when there is no sunlight to fuel plant life. Klages said no ice sheets were present during the time, but seasonal snowfall was likely.

5 . Scientists have been trying to figure out how to alter the genes of humans for many years, and it looks like they’ve finally cracked (破解) the code. But while this may seem like a great step forward in science, some also believe that it’s one step back when it comes to ethics (道德准则). In August, a group of scientists from the USA and South Korea worked together to successfully edit a human embryo (胚胎) and remove a genetic mutation (突变) that would have led to heart disease, reported The Guardian. This was done with the help of CRISPR, a gene-editing tool that allows scientists to “cut and paste” human DNA.

Although this was the first example of an embryo’s genes being changed successfully, the advantages of gene editing have already been tested in living patients. In 2015, a five-month-old girl from the UK was saved after doctors used edited cells to fight off her cancer. As of today, she’s alive and well. And in the USA last year, scientists managed to remove HIV cells from several patients by editing the genes inside their bodies.

Some people hope that in the future, diseases or birth defects could simply be "edited out”. However, others believe this could lead to so-called designer babies, giving parents the option to choose everything from eye color to intelligence. “You could find wealthy parents buying the latest “upgrades” for their children, leading to even greater inequality than we already live with,” Marcy Camovsky, director of the San Francisco Center for Genetics, told BBC News.

In spite of these ethical concerns, experts say it’s not possible to create the “perfect” human being. Despite the progress scientists have made, we don’t understand human genes enough to give all unborn children great brainpower or amazing singing abilities. “Right now, we know nothing about genetic enhancement,” Hank Greely, a director at Stanford University, USA, told The New York Times. “We’re never going to be able to say, honestly, this embryo looks like it would score high on the two-part SAT.”

So it looks like if we want good exam results, or to impress people with our piano skills, we’ll have to stick with the old fashioned method of plain hard work---at least for now.

7 . An 18-year-old US girl gained unexpected appreciation and a surprise after she gave “extra help” to an elderly man in the restaurant she was working.

It's social media that made her seemingly small action go viral and brought her appreciation from hundreds of thousands of strangers and a scholarship to Texas Southern University.

The heroine Evoni Williams has reportedly been working full-time to earn money for further study in a restaurant in La Marque, Texas, the United States. It was last week when an old man named Adrian Charpentier asked for help to chop his ham for his hands were weak because of illness. On that busy morning when she had loads of work on shoulder, Williams helped the man without hesitation. The moment she was leaning over the counter and cutting the ham was shot by a customer known as Laura Wolf.

Wolf posted the picture on the Internet and wrote, “I'm thankful to have seen this act of kindness and caring at the start of my day while everything in this world seems so negative. If we could all be like this waitress and take time to offer a helping hand. . . ” According to local reports, Wolf didn't know Williams, neither did Williams know her act was shot and shared on the web. However, the small act of kindness soon accumulated its own power on and outside the Internet.

Besides praise from netizens and media reports across the United States, a 16000-dollar scholarship to Texas Southern University was recently granted to Williams to support her study plan on business management.

“We wanted to reward Evoni's act of kindness and let her know that good deeds do not go unnoticed,” said Melinda Spaulding, an administrator at Texas Southern University.

9 . I am an e-mail user. When I first started to use the e-mail system, I used to read all my e-mail. I didn't have much mail. I gave my friends my e-mail address. Soon I had more mail than wanted. Some of the mail was junk mail. I was worried. I didn't want my mail to control me.

I've tried some methods to help me get control of my mail. First, I check my mail at the same time every day. Also, I try to allow myself only 15~20 minutes every day to process my email. This doesn't always work, but I try. Sometimes I save the messages. Sometimes I read them, maybe answer a few, and then delete them.

Sometimes I get some junk mail that I'm not interested in at all, I don't even open it. I usually delete it right away. This is very much the way I go through the mail that the postal service delivers to my home.

These methods are very simple. I have some friends who are very clever with computers. From time to time, they teach me new tricks for managing my e-mail. I'm still amazed at what email can do for me! I'm still worried, however, about having too much to read.

10 . What makes a person a giver or a taker? The idea of "give vs. take" takes shape in all interactions (互动)and relationships of our lives. We're either giving advice, making time for people, or we're on the receiving end. We keep changing between the two based on different situations on a daily basis, if not an hourly one.

According to Adam Grant, a professor at the University of Pennsylvania, most people are matchers. They make careful observations on takers and make it a point for them to pay something back. They hate to see people who act so generously towards others not receive any rewards. Actually, most matchers will try hard to improve and support givers so that they can get the good they deserve.

Is there a gender factor (性别因素) that plays a part in this?

A study led by Hannah Riley Bowles, a professor at Harvard University, focused on this question. She asked 200 senior managers to sit down in pairs where one person would act as the boss and the other as an employee to discuss salary rise. Male "employees" asked for an average salary of $146 k while the females asked for only $141 k. But why did they not bargain as hard as the men? Simply because they were more likely to be givers.

As a woman, I do enjoy the act of giving up my time, my knowledge, and my care and attention to others. I expect anything in return, but I do tend to pull myself away when I feel like I'm being taken for granted(被认为当然). I also tend to get upset when I see a loved one's continuous actions of kindness go unnoticed. So, it's safe to say I'm 50% giver, 35% matcher and 15% taker.

I do know someone, however, who is 99% giver. They're continually devoting their time, sharing valuable insights (见解) and going out of their way for everyone who crosses their path. Although they've changed the lives of many people, they hardly see any of it returned. But the universe is slowly repaying them; they're now extremely successful, well known for what they do.