【推荐1】Deleted Photos May Still Be on Your Phone

When you remove a photo from your cell phone, it may not be gone for good. That is great news if you accidentally delete an important photo.     1    

You may think when you tap the trashcan icon to delete a photo, that photo is no longer on your phone. But that may not be true. The photo may stay on your phone for a while to give you a chance to restore it.

So, it is important for you to know what happens to a photo when you send it to the trash.

When you tap the trash can icon on iPhone or iPad, you will see a confirmation.    2     When you choose Delete, a notice tells you the photo will be deleted from all of your devices.

Your photo will disappear from view then and there.    3     Instead, the image is sent to the Recently Deleted album in the Photos app where it remains for 30 days. During that time you can return a photo from the Recently Deleted album to your phone. You can also choose to delete it permanently.

To find the Recently Deleted album, open the Photos app. (hen tap Albums in the bottom menu. Swipe to find the Recently Deleted album. Tap on the Recently Deleted album to find the photos you have deleted within the past 30 days.    4    

If you decide you want to keep a photo or delete it at that moment, tap Select in the upper right comer of the screen. Then tap the photo you want to keep or delete so a check mark appears. Tap Delete or Recover at the bottom of the screen to delete the photo or add it back into the app.

If you choose to delete a photo from the Recently Deleted album, you will be asked to confirm your choice. You will also be warned: “This photo will be deleted.    5    ”

【推荐2】Essentially, everyone has two ages: a chronological(按时间计算的) age, how old the calendar says you are, and a biological age, basically the age at which your body functions as it compares to average fitness or health levels.

“Chronological age isn’t how old we really are. It’s merely a number,” said Professor David Sinclair at Harvard University. “It is biological age that determines our health and ultimately our lifespan(寿命). We all age biologically at different rates according to our genes, what we eat, how much we exercise, and what environment we live in. Biological age is the number of candles we really should be blowing out. In the future, with advances in our ability to control biological age, we may have even fewer candles on our birthday cake than the previous one.”

To calculate biological age, Professor Levine at Yale University identified nine bio-markers that seemed to be the most influential on lifespan by a simple blood test. The numbers of those markers, such as blood sugar and immune measures, can be put into the computer, and the algorithm (算法) does the rest.

Perhaps what’s most important here is that these measures can be changed. Doctors can take this information and help patients make changes to lifestyle, and hopefully take steps to improve their biological conditions. “I think the most exciting thing about this research is that these things aren’t set in stone,” Levine said. “People can be given the information earlier and take steps to improve their health before it’s too late.”

Levine even entered her own numbers into the algorithm. She was surprised by the results. “I always considered myself a very healthy person. I’m physically active; I eat what I consider a fairly healthy diet. But I did not find my results to be as good as I had hoped they would be. It was a wake-up call,” she said.

Levine is working with a group to provide access to the algorithm online so that anyone can calculate their biological age, identify potential risks and take steps to improve their own health in the long run. “No one wants to live an extremely long life with a lot of chronic diseases,” Levine said. “By delaying the development of mental and physical functioning problems, people can still be engaged in society in their senior years. That is the ideal we should be pursuing.”

【推荐1】The number of birds in North America has declined (减少) by almost 3 billion since 1970, according to a study published in Science. The researchers estimated changes in the populations of 529 species using long-term bird-monitoring databases. Those data showed that the number of individual birds across all of those species had decreased by 29 percent, from around 10 billion in 1970 to just over 7 billion in 2017.

“The data they used provide probably the best long term, large information on species abundances (物种丰度) for any group of animals or plants anywhere in the world,” Natalie Wright, a bird biologist tells The Atlantic. “There’s always uncertainty, but if they are wrong, they are likely underestimating the size of population declines.”

The team also examined 10 years’ worth of data from a network of 143 weather radars, which pick up bird migrations, and found a reduction in migratory biomass of about 14 percent since 2007. “Two completely different and independent monitoring techniques thus signal major population loss across the continent,” the authors wrote in their paper.

The results are particularly concerning because many of the species showing declines are not considered rare or in danger, but are almost everywhere and potentially act as important contributors to food webs and ecosystem (生态系统) function. More than 90 percent of the loss in abundance in the survey data was due to declines in 12 families including sparrows and blackbirds. Some other species, including many ducks, instead showed increases in abundance-possibly as a result of focused conservation efforts in recent years.

The findings should be a wake-up call. Many of the birds studied spend time in multiple countries within and beyond North America. What our birds need now is a historic, global effort that unites people and organizations with one common goal: bringing our birds back.

【推荐3】When traveling abroad or even in your own country, you may have numerous opportunities to meet the locals of your destination.    1    Here are some tips on how to meet locals while traveling.

Chat with locals online.    2    .Don't be hesitant to ask them for suggestions on what to visit, where to travel, and where any locally popular attractions are located. This will let you get a sense of how the people in the area really live.

Talk to people on your way. On the plane, train, or bus ride to your destination, try starting a conversation with someone. Chances are you may find a person native to the area or who knows someone that lives there.

Ask questions. Upon arriving at your destination, ask the staff at your hotel.    3    .

    4    .Kindness goes a long way, especially from tourists visiting a foreign destination. Make sure to research the customs, traditions and cultures of the people you'll be interacting with, and always greet people in a friendly manner.

Use community-marketplace platforms.    5    , including accommodation, dining experiences and transport. These allow you to see their lifestyles from a first-hand viewpoint.