1 . The first apes evolved 20 million years ago in the forests where they would go up a tree to get their food, and then come back down to move on to the next tree. Getting out of a tree presents all kinds of new challenges. Big apes can’t afford to fall because it could kill or badly injure them. Natural selection would have favored those with body structures that allowed them to descend safely.

Dartmouth researchers report in the journal Royal Society Open Science that apes probably evolved free-moving shoulders and flexible elbows to slow their descent from trees as gravity pulled on their heavier bodies. These flexible body parts passed on from ancestral apes would have allowed early humans to climb trees at night for safety and comedown in the daylight unhurt. When early humans transitioned from forests to open savannas (热带稀树草原), flexible shoulders and elbows were crucial for gathering food and using tools for hunting and defense.

The researchers used sports analysis and statistical software to study how primates(灵长目动物) like chimpanzees and small monkeys called mangabeys climbed in the wild. They found that chimps and mangabeys scaled(攀爬) trees similarly, with shoulders and elbows mostly bent close to the body. When descending, however, chimpanzees extended their arms above their heads to hold on to branches, much like a person using a ladder, to counteract(抵消) their heavier weight pulling them downward.

Luke Fannin, the lead author of the study, emphasized that their findings highlight the importance of “down climbing” in the evolution of apes and early humans. He explained, “Our research introduces the idea that down climbing played a significant role in shaping the structural differences between monkeys and apes, which eventually manifested in humans.”

“Our field has thought about apes climbing up trees for a long time, but we’ve been ignoring the second half of this behavior,” said Professor Jeremy DeSilva, “The findings are among the first to identify the significance of “down climbing” in the evolution of apes and early humans.

2 . When we open a news app, we’ll notice that every second, we are presented with so much information that our brain just can’t keep it. The matter is made worse by our belief in “multi-tasking” which is, more often than not, simply another term for divided attention.     1     Understanding our limit allows us to fix it. So, here are three tips to give ourselves the peace we really need.

Control the information flow

Set up a new account on social media and follow only accounts or people that are really valuable.     2    . It’s much better to have a few healthy meals that fill you up, than eating fast food throughout the day.

    3    

It is unnecessary to throw away the phone but do give ourselves a time limit, Say, “I will only use this app for 20 minutes” or “I will only read this magazine after dinner.”

Acknowledge our limits

We’ll never read all the news. We’ll never read all the “must-read” articles.     4    . Don’t beat ourselves up that we’re being unproductive or we’re missing out. We’re getting more out of those few than that “super-productive“ person on social media who says they read five books a week.     5    

6 . Mia Samolinski attended the same school as Anthony Zhongor, an 18-year-old freshman, but the two had never met. That night, their paths crossed in the most remarkable way.

Mia had just gotten into her car and was about to drive away, but she hit the gas instead of the brakes. Security footage (录像) shows the car rushing over a sidewalk, hitting a trash can, and then plunging (突然前冲) into the dark, cold water of the bay in just a few short seconds. People rushed to look in the water, but only one person jumped in after Mia, and it was Anthony.

“She went pretty deep in there,” the teenager recalled. “She was striking the door and the window, trying to break the window, of course, and that got me nervous and scared for her, so I just took my clothes off and went into the water.”

Mia’s car began to sink rapidly, but she couldn’t get the doors or windows open. Anthony tried to get the doors open from the outside, but couldn’t quite manage it. As the seconds ticked by, the teenage hero realized he could use his own body weight to push down the heavy front end of the car, making the back end stick out of the water. Mia climbed into the back and managed to escape through the rear hatch (后备箱盖). She and Anthony swam to the shore together. As soon as they were safe, tearful Mia thanked Anthony sincerely for saving her.

Like so many heroes, Anthony did not set out to save a life that night. But he was in the right place, at the right time. “It doesn’t matter who it was, he or she was suffering,” he said, “I couldn’t watch anybody suffering in front of me.”

8 . The sound of children’s laughter is not something you often hear at a hospital. Yet in the hallways of Children’s Health of Orange County (CHOC Hospital) in Orange, California, the joyous sound of kids having fun will soon be a common occurrence. That’s because Honda teamed up with the hospital to create a first-of-its-kind electric car made just for kids!

Shogo is the child-sized electric ride-on car, which was built by Honda through their charitable “Project Courage”, an initiative aimed at adding some much-needed happiness to the days of children battling with serious illnesses in hospital.

Shogo was made entirely by Honda’s engineers, and they’re incredibly proud of it. The car has been used at CHOC in place of wheelchairs. Now, patients can drive themselves to their treatment s in various parts of the hospital, giving them a reason to look forward to these procedures instead of dreading them.

Shogo is meant for child drivers aged 4 through 9. The car has a simple stop/go mechanism they can easily use, and it’s capable of going about one to five miles per hour. Don’t worry, though; the speed is controlled not by the kids but by a nurse or caregiver walking alongside the car.

Safety was at the top of the engineers’ minds when making Shogo. Besides, the vehicle has no doors so kids can easily get in and out, a soft-to-the-touch interior that can be washed to stay sanitary (卫生的) in a hospital setting, and it comes equipped with an I. V. pole holder. There’s even a toy holder and a horn with different sound options, and kids can create their own custom license plate for the built-in holder. So far, every patient who has tried Shogo has absolutely loved it!

What a fantastic invention! There’s nothing more beautiful than the sound of kids having fun, and we’re so delighted that caregivers at CHOC will get to hear that sound more often from now on.

9 . Do you know that about 71 percent of our planet is covered by the ocean (海洋) ?     1    . People around the world wear blue to celebrate World Oceans Day on 8 June every year. World Oceans Day is a special day for learning about oceans, including why they’re in danger and how essential it is to protect them.

Without oceans, life couldn’t exist. Scientists don’t know the exact number, but they think that oceans are home to 50 percent to 80 percent of all species on Earth, from large whales to tiny plankton. Oceans absorb carbon dioxide and give out oxygen (氧气).     2    .

Humans use the ocean in many different ways. Lots of our food comes from oceans.     3    . Besides getting oil and gas from beneath the ocean floor, we can produce electricity using the power of waves. We even rely on submarine cables for international communication.

    4    , but sadly they are in danger. You’ve heard of plastic pollution. Billions of pieces of plastic are floating around in our oceans, harming and killing sea creatures. It’s also dangerous for our health too, because fish eat the tiny pieces of plastic and then humans eat the fish.

For World Oceans Day, you can use social media platforms to share posts, photos or videos showing how important oceans are and why we need to protect them.     5    . Remember that every day we can make a difference by using less plastic and recycling, and talking to others about protecting our precious oceans.

10 . The Clubs of Liberty High School

Welcome to our school! We offer a wide range of clubs to cater to the interest and talents of our students.

Our Sports Club is perfect for students who enjoy physical activities. We offer various sports such as basketball, soccer, tennis, volleyball and more. Through regular practices and friendly matches, the students will develop teamwork and leadership skills. Join Sports Club through Jessical6012@yahoo. com.

Do you have a love for experimentation? Science Club is for you! From chemistry to physics and biology, Science Club provides a platform for you to improve your scientific knowledge and develop critical thinking skills. Call 610-691-3612 for more information.

Music Club invites students with a love for singing or playing musical instruments. It also offers opportunities for songwriting and composing. Join us to create beautiful melodies and harmonies together! You need to fill in a club registration form in the Main Office.

Community Service Club pays attention to serving the local community through various volunteer and charity activities. We organize fundraisers, donation drives and social outreach programs. By joining this club, you’ll have the opportunity to develop empathy while contributing to the community’s development. For the application, you can call 610-691-6625.