2 . “The mountains are calling and I must go” — the famous quote is from John Muir(1838-1914), who is described as “the wilderness poet” and “the citizen of the universe.” He once jokingly referred to himself as a “poet-geologist-botanist and ornithologist (鸟类学家)-naturalist etc. etc.!” He is known as the Father of American National Parks.

Famed documentary filmmaker Ken Burns recently said, “As we got to know him… he was among the highest individuals in America; I’m talking about the level of Abraham Lincoln, Martin Luther King Jr., and Thomas Jefferson— people who have had a transformational effect on who we are.”

So where is the quote from? Well, John Muir was a productive writer. Whether he was writing poetry or simply letters to his family, John Muir was always putting pen to paper. The quote is from within one of his many letters written to his sister:

4 . To produce the classic clothing, blue jeans, producers rely on indigo dye (靛蓝染料), the only molecule known to provide jeans’ unique, beloved color. While indigo itself naturally comes from a plant, growing demand for blue jeans throughout the 20th century gave rise to synthetic (合成的) indigo, which is now more commonly used.

Indigo is the dye that makes jeans blue, but it doesn’t mix with water. To dye clothes, usually, chemicals are needed to make the color stick to the cloth. But in Denmark, scientists have created a new way to dye clothes using an enzyme (酶), which is a kind of protein that can cause chemical reactions, instead of harmful chemicals. This new method is better for the environment and doesn’t use poisonous stuff.

The chemical process for dyeing blue jeans has persisted for the last century. Workers are exposed to the poisonous chemicals, which also pollute the environment near factories. Waste water from those factories often ends up in waterways, decimating local ecosystems and even dyeing rivers blue.

Ditte Hededam Welner, the study’s lead researcher, says their new enzyme works really well and is strong enough for making lots of jeans without breaking down. This enzyme makes dyeing with indican, which is like indigo, much less harmful to the planet — about 92% better than the old way.

However, the new method doesn’t fix all the environmental problems of making jeans. Making a single pair of jeans uses a lot of water — enough to fill many bathtubs — from growing the cotton to putting the final touches on the jeans.

Even though the new dyeing process is better for the environment, it’s not always easy or cheap to change to it. Welner’s team isn’t sure if jeans companies will find it easy or affordable to switch to this method. It costs a little bit more — just seven cents extra per pair of jeans — to use the enzyme for dyeing. But Welner believes it’s worth it because it’s much better for the environment.

5 . A study following nearly 30,000 older adults for more than 10 years has found six key healthy lifestyle factors can significantly reduce memory loss and those adults engaging in between four and six of the healthy lifestyle behaviors could dramatically reduce their risks of developing dementia (痴呆), even when carrying genes that increase their risks of Alzheimer’s disease.

“Six healthy lifestyle aspects were assessed: a healthy diet, regular physical exercise, active social contact, active cognitive (认知的) activity, never smoking, and never drinking alcohol,” the researchers explained in the new study. Participants were classified (分类) into the favorable group if they had four to six healthy lifestyle factors, into the average group for two to three factors, and into the unfavorable group for zero to one factor.

The study found that people with four to six healthy habits had a much slower loss of memory than those with fewer healthy habits. People with these good habits were also much less likely to get dementia than those with one or no healthy habits. Those who had two or three good habits were 30% less likely to get dementia.

The study didn’t figure out which of the six healthy habits is the best for stopping dementia or which combination is the best. However, the information did show that eating healthy seemed to help prevent memory loss the most, with brain exercise and regular physical exercise also very helpful.

About 20% of the people in the study had a gene that makes Alzheimer’s disease more likely. Even so, having several good health habits helped slow down memory loss. This shows that changing how we live can really help.

Even though each health habit helped in a different way, overall, the study found that people with more good health habits had much less memory loss than those with fewer good habits. This suggests that the choices we make in how we live can help protect our memory. The study adds to the evidence that we might be able to change our risk of memory loss.

6 . Thomas was a well-known wise man. One day, he wandered in a beautiful small town. Because of his fame, people from nearby towns who heard of his arrival all came to visit and seek his advice.

Many who came sought help with difficulties in daily life, and Thomas, unable to bear turning them away, patiently offered suggestions. Word spread quickly, and more and more people came to see Thomas for guidance.

One day, dozens of people crowded outside Thomas’s door, all clamoring (大声地要求) that their problems were the most serious and urgent, each insisting that Thomas address their concerns first, with no one willing to yield (让步).

After a moment of thought, Thomas took out some paper and a pen and said, “I can’t hear clearly with everyone talking at once. How about everyone write down your problem on a piece of paper and place it in this basket beside me?”

Once everyone had placed their notes in the basket, Thomas shook the basket and said, “Please each take a piece of paper from the basket and read what it says.”

As everyone read a note from someone else, they all realized that indeed, each person has their own troubles, and every household has its own challenges. Then Thomas spoke up, “Now, whose problem is the most urgent to solve?” Hearing that question, no one spoke again, because now no one dared to claim that their problem was the most severe.

Often, we are bound by our immediate feelings. When difficulties and problems strike, it feels as though we are caught in a vortex of pain. But if we shift our focus from ourselves and look towards others, we might discover that the problems we face are not so significant. Perhaps others are the ones who need help more urgently, or maybe there is something within our power that we can do for them.

9 . Israel was accused of using white phosphorus bombs (白磷弹), a banned bomb, in the Palestine-Israel conflict in October. However, the Israeli military later claimed in a statement that it didn’t use such a weapon, reported Reuters.

White phosphorus is a highly free burning chemical that can create intense heat, light and smoke, reaching over 1,000°C when burned. The flame it produces is difficult to put out, leading to deadly burns on the human body.

The chemical is also poisonous. Those coming into contact with it may suffer heart, kidney or bone damage. And bomb-hit areas are likely to be polluted by white phosphorus, resulting in long-term environmental damage.

This news sparked public concern about destructive weapons. International humanitarian law (IHL) bans any weapon “of a nature to cause overmuch injury or unnecessary suffering”. Such a weapon can cause indiscriminate harm, injuring or killing soldiers as well as civilians.

The Geneva Conventions (《日内瓦公约》) and their Additional Protocols, which form the core of international humanitarian law, have set requirements for all countries to follow about how wars are carried out. For example, the use, production, stockpiling (储备) or selling of biological and chemical weapons are forbidden.

Chemical weapons, such as mustard gas, are poisonous. They can cause temporary or permanent damage to people and have various effects, such as severe eye pain, breathing difficulty, and blistering (起水泡) of the skin. Biological weapons, usually developed from viruses or bacteria, attack the human immune system, often with deadly consequences.

Other international conventions also have made related rules, which apply to the countries that have agreed to them. For example, according to the IHL database, any actions expected to result in widespread, long-lasting destruction of the environment are prohibited.

“During the Vietnam War, the US military employed a highly effective defoliant (落叶剂) called Agent Orange,” Zhang Gaosheng, are searcher at China Institute of International Studies, told CCTV News. “This resulted in the destruction of about 20 percent of Vietnam’s forests, leading to significant damage to the ecosystem.” The usage of the chemical was subsequently banned, he added.

10 . The contestant Jane Marczewski, whose stage name is Nightbirde, recently entered the TV reality show America’s Got Talent. Looking small on stage, but with an attractive smile that filled the auditorium, the 30-year-old woman introduced herself to the judges.

It was when she planned on devoting herself to music that the singer from Ohio found out she had cancer. On stage she said that she was battling cancer. Pretty casually she said that at her last check-up she had some cancer in her lungs and liver. While she professed (自称) to be okay, she explained that she wanted people to see her as being “so much more than the bad things that happen to me”. Getting out there on stage with her own song It’s OK, she was able to pass on this message.

The name “Nightbirde” itself is significant. She chose it after many night s dreaming of birds singing in the darkness. She woke one night to hear birds singing by her window as if it were the morning. For her this represents hope and her life at the moment. “I want to be that way, even when I am in the middle of a dark time and there are no signs that it will end. I want to be the bird that sings in anticipation of the good things that I trust are coming,” she shared with Liberty Journal.

Finally, her actual performance was quite triumphant. It wasn’t surprising that everybody was visibly amazed by it. And it didn’t take long for Simon Cowell, one of the judges to send Nightbirde directly through to the final. Nightbirde’s song has already stormed up the charts and is now number one on US iTunes.