1 . It’s the textbook beginning of a nightmare: Lost on a hiking trail, with no water, and an injured dog too heavy to carry. Fortunately for the family of thrce this story happened to, they literally ran into a boy scout(童子军).

For JD,Aimee, and their dog Smokey, a two-mile hike had become s seven-mile disaster on the Waimanu Trail above Pearl City, Honolulu,their phone was dead, and it was getting dark. That’s whe they came across 12-year-old David King and his mom Christine. “We asked “oh, do you need any help?” They said “yeah. ”They showed us the dog’s paws had some cuts on them,”David recalled.“When the dog would walk, it would just be really painful.”

David was just three miles short of getting his 15-mile-hike merit.badge(奖章)，but despite having done that and played a soccer match earlier in the day, David did what all boy scouts do: He lent a hand

First,he suggested they build a stretcher(担架)by using two lengths of wood and stringing their T-shirts across it-a technique David had learned from his eagle scout older brother.

“It was his idea to make the stretcher,”Christine said proudly. “We didn't think it would work because we didn’t think the dog would get onto the.stretcher. Smokey was just happy to, and we just carried him out, ”

David knew the way back to the parking lot as well, and so they all worked together, sometimes in twos, sometimes in fours, to get Smokey to safety.

David later suggested when you’re off on a hike, a good way to be prepared should be to imagine what could go wrong, and plan for that.

2 . Researchers from London’s Queen Mary University studied how participants were affected by pollution based on where they live. In the journal Circulation on Friday, the scientists revealed that air pollution can harm the heart to the point where it resembles (类似) the early stages of heart failure.

According to Emory Healthcare, deaths have decreased around 12 percent per decade on average over the past 50 years, but 287,000 people die frorn heart failure each year. There are more hospitalizations from heart failure each year than all cancers combined.

In this study, the scientists examined information from 4,000 participants that were in the UK Biobank study. Volunteers had blood tests, health scans and heart MRIs, which measured the function, size and weight of their hearts. They also recorded their lifestyle, health record and where they’ve lived.

The team found participants had larger right and left ventricles (心室) in the heart when they lived closer to busy roads and were exposed to nitrogen dioxide(NOz), which enters the air when fuel is burned. The right and left ventricles are crucial for pumping blood. They were healthy but resembled the ventricles in early-stage heart failure. The scientists found that the higher the exposure to the pollutants, the greater the changes in the heart.

“Air pollution should be seen as a modifiable risk factor,” Dr. Nay Aung, who led the data analysis of the study, said in a statemnent from Queen Mary University. “The public all need to be aware of their exposure when they think about their heart health, just like they think about their blood pressure and their weight.”

Professor Jeremy Pearson, Associate Medical Director at the British Heart Foundation said in the statement from Queen Mary University, “We can’t expect people to move home to avoid air pollution, so government and public bodies must act right now to make all areas safe and protect the population from these harm.”

3 . Please don't feel singled out, special, or view yourself as a chosen one. She bites everyone. This is just the nature of the beast. There is absolutely no truth to the persistent myths that mosquitoes fancy females over males; that they prefer blondes and redheads over those with darker hair；or that the darker or rougher your skin, the safer you are from her bite. It is true, however, that she does play favorites and feasts on some more than others.

Blood type O seems to be the choice over types A and B or AB. People with blood type O get bitten twice as often as those with type A, with type B falling somewhere in between.

Those who have higher natural levels of certain chemicals in their skin, particularly lactic acid （乳酸），also seem to be more attractive. From these elements, she can analyze which blood type you are. These are the same chemicals that determine an individual’s level of skin bacteria and unique body smell.

Mosquitoes are also attracted by perfumes, soaps, and other applied fragrances. While this may seem unfair to many of you, she also has a desire for beer drinkers.

Wearing bright colors is also not a wise choice, since she hunts by both sight and smell, the latter depending chiefly on the amount of carbon dioxide sent out by the potential target. So she can smell carbon dioxide from over 200 feet away. When you exercise, for example, you emit more carbon dioxide through both breath and output. You also sweat, releasing those appetizing chemicals, primarily lactic acid, that invites the mosquito's attention.

Lastly, your body temperature rises, which is an easily identifiable heat signature. On average, pregnant women suffer twice as many bites, as they have a slightly raised body temperature.

Please don't go on a shower, exercise or give up your beloved beer and bright T-shirts just yet. Unfortunately, 85% of what makes you attractive to mosquitoes is fixed in advance in your genetic circuit board （电路板）.At the end of the day, she will find blood from any exposed target of opportunity.

9 . Chase Poust is a 7-year-old boy. He and his dad Steven, and his 4-year-old sister, Abigail were out for a family boating trip on Florida’s St. Johns River near Mandarin Point. Chase and Abigail were swimming at the back end of the anchored boat while Steven was on deck (甲板) fishing.

It was an idyllic (悠闲的) outing — until a strong wave came. It was too strong for Abigail to hold onto the boat. Instantly realizing his sister would be swept away, Chase let go of the boat as well to try and reach her.

Steven jumped into the water but after realizing he couldn’t keep up with both kids, he was faced with a hard decision. “I told them I loved them because I wasn’t sure what’s going to happen,” Steven told News-4 JAX. “I tried to stick with both of them. I wore myself out. She drifted away from me.”

Directing Chase to swim to shore for help, Steven stayed behind, keeping as close as he could to Abigail as the life-vest that was keeping her above the waves floated further and further from his reach.

It was a tough go for the 7-year-old, but rather than attempting to swim all out, Chase wisely paced himself. Stopping to float or dog paddle when he was tired, he’d rest and then set off again. It took Chase an hour to reach the shore. Once on solid ground, he ran to the nearest house and called for help.

Rescuers arrived soon to search for Steven and Abigail. Miraculously, the two were found and rescued about an hour later-more than a mile away from the family’s abandoned boat.

10 . Cayce Zavaglia is an artist with a unique transformation to her work.    1    Painting with tiny needles is not as fast as painting with a brush.    2    It takes two months-nearly 200 hours to complete a portrait.

    3    Once she decides, she invites that person to her studio and takes hundreds of photographs. She studies the way the light falls across the person's face. After many hours of studying the photos, she chooses the perfect one for her portrait. Next, she enlarges the photo on a canvas(画布). Then, she matches the colors in the photo and the stitching begins.

Cayce starts with the hair and forehead, then moves on to the shoulders and clothing, and finally the face. The human face is what she most enjoys creating in her art.    4    In a portrait of her baby daughter, the skin appears soft and smooth. In a portrait of her dad, the stitches show a wrinkled and aging face.

Cayce believes her success depends on three things: her choice of colors, the length and direction of the stitches, and her ability to make the portrait look true. She loves the surprise when people view her art. From a distance, people believe the portraits are painted.    5