【推荐1】Summer is fast approaching and warmer temperatures bring pests like mosquitoes.

    1     An easy way to protect yourself from mosquitoes is to use a repellent（驱虫剂）.Joseph Conlon, technical advisor of the American Mosquito Control Association, recommends using a repellent that is registered with the EPA （Environmental Protection Agency） , which promises that it causes no harm to humans.     2     Repellents with 25 — 30% concentration of DEET （避蚊胺）will provide 4一6 hours of protection and it is the “gold standard by which all repellents are judged," according to Conlon.

    3     Conlon explained that mosquitoes can bred （繁殖）in water collected in areas as small as bottle caps but they have a limited flight range, meaning they can^’t travel far. "The best way to avoid them is to not have them around in the first place, he explained. "If you've got them in your backyard, it's because you're breeding them in your backyard."

Is there anything better than “the gold standard"? Repellents made from coconut（椰子） oil work better than DEET, a government study says.     4     A slight wind from a fan can help keep them at Bay.

If you have water around your house. Beth Ranson, public relations officer for Florida Keys Mosquito Control District, suggests acquiring fish that will eat mosquito larvae（幼虫）.

    5    She and her team experimented with male mosquitoes infected with bacteria that stop females from producing larvae when they mate. "There's not a lot of companies producing new chemicals or treatments that we can use, she explained. " We need new technologies and products as these mosquitoes develop this resistance.

【推荐2】Scientists have recreated a 1985 study of birds in Peru that shows climate change is pushing them from their natural environment. Thirty years ago, researchers studied more than 400 kinds of birds living on a mountainside in Peru. In 2017, researchers looked again at the bird populations. They found that almost all had moved to higher places in the mountain. Almost all had decreased in size. And, the scientists say at least eight bird groups that move to the higher altitude had died out completely.

Mark Urban, director of the Center of Biological Risk at the University of Connecticut, said this recent study was the first to prove that rising temperatures and moving to avoid them can lead to extinction.

In 1985, Fitzpatrick, director of the Cornell Laboratory of Ornithology, and a team of scientists established a camp alongside a river running down a mountainside in southeastern Peru. He wanted to document where tropical bird groups lived. His team spent several weeks using nets to catch and release birds. They kept detailed notes of birds they caught, saw or heard. In 2016, Fitzpatrick passed his notes, photos and other records to Benjamin Freeman. Freeman who has been researching tropical birds for more than 10 years set out in August and September of 2017 to copy Fitzpatrick’s study. His team used the same methods, searching the same places in the same time of year.

Freeman said that the birds moved an average of 98 meters further up the mountain, believing that temperature is the main cause of the birds’ movement. Fitzpatrick noted that birds used to living in areas with little temperature change might be especially at risk because of climate change. He said, “We should expect that what’s happening on this mountain top is happening more generally in the Andes, and other tropical mountain ranges.”

【推荐1】COURTESY PAUL BOZYMOWSKI-Three New York City police officers paid for a woman’s groceries rather than arresting her.

As temperatures approached 90 degrees in New York City last July 4th, three police officers ducked into a Whole Foods Market to get something cold to drink. What they walked into was a heated human drama.

Once inside, the cops, Lt. Louis Sojo and Officers Esanidy Cuevas and Michael Rivera, were approached by a store security guard who asked for help with a suspected shoplifter. The woman in question didn’t have the look of a career criminal. She was obviously scared, and her cheeks were wet with tears.

The cops peeked inside her bag. “All we saw was containers of food.” Cuevas told CBS New York.

"I’m hungry," she explained quietly.

Caught red-handed, the woman no doubt expected to be sentenced to jail for the crime of being hungry while poor. But the cops had other ideas. “We’ll pay for her food,” Sojo told the surprised security guard.

There’d been no discussion among the three men. It went unsaid. Instead, they picked up the woman’s bag and accompanied her to a cash register, where each took out $10 to pay the tab. She would not be arrested today.

All the woman could do was weep in gratitude. Covering her face with a kerchief and drying her eyes, she repeated, “Thank you, thank you.”

She wasn’t the only one touched by this act of mercy. “It was a very beautiful, genuine moment,” says Paul Bozymowski, who was at the store. He was so taken by what he’d witnessed that he posted a photo on Twitter for all to see.

But attention was never what the officers sought. They were driven by a far more common emotion. As Sojo told CNN, “When you look at someone’s face and see that they need you and they’re actually hungry, it’s pretty difficult as a human being to walk away from something like this.”

【推荐2】How would you like an easy way to earn $2,500? All you have to do is to sit around and wait for your meals. There’s a catch, however. You have to stay in a chicken cage with a stranger for a whole week. There are no books or television or radio for a whole week. There are no books or television or radio for amusement. You can’t leave until the week is up. And a camera will be recording your every move.

Two people actually took the job. The idea came from Rob Thompson, a video artist. He wanted to make film about the way animals are treated. His goal was to raise people’s awareness of the living conditions of animals that are raised for food. He decided to pay $ 5,000 out of his own savings to two people who were willing to live like chickens for a week.

To Rob’s surprise, quite a few people answered his advertisement. He had interviews and selected Eric, a 24-yearold restaurant worker, and Pam, a 27-year-old chemist. The plan was for them to spend seven days together in a chicken cage that was six feet long and three feet wide. A camera would record their experience, which would take place in an art museum.

The week was long and difficult. They slept on hard wooden floor. They couldn’t stand up without banging their heads. They ate mash (a kind of food for animals) and drink water from a garden pipe. Their only privacy was a toilet surrounded by a curtain, which was the most unbearable. There were no sinks, mirrors or toothbrushes in the cage.Visitors we came here who were warned, “Do not feed the humans.”

Finally, it was over, and Pam and Eric came out of the cage. They had survived the week and they each had a $ 2,500 check in their hands. When Rob Thompson opened the cage, Eric came out, changed into clean clothes, and ate a chocolate bar right away. “It’s great for me to be able to stand up.” he said. Pam just changed her clothes and left. After a week of visitors and reporters watching her, she didn’t want to talk to anyone.