The School’s Community Service Program encourages all Lawrentians to connect with the greater community, giving them the opportunity to join a variety of people outside the students' present world. Because we want students to have a common service experience that improves their Lawrenceville education and builds community within and beyond the gates, the Community Service graduation requirement is not based on a certain number of hours that a student must complete. Instead, students participate in three different types of community engagement.

1. Lawrenceville Community Action Project (LCAP) to be completed in 9th, 10th or 11th grade. LCAP examples include: a one-term weekly project; being an advisor at Lawrenceville School Camp or Performing Arts Camp; or participating in a Harkness Travel Program Service Trip.

2. Annual participation in the School’s Martin Luther King All-School Day of Service

3. One-time events ( All-School, House, club or team sponsored)—1-3 times before graduation depending on students^, entering year.

Students may choose, from over 30 different weekly projects in the Trenton-Princeton- Lawrenceville area. Typically, students do these projects during the evening or on Sunday afternoons if they are playing a school sport, or on a Wednesday or Friday afternoon if they are involved in House or lifetime athletics.

Students also sometimes develop their own weekly projects based on their interests and talents. Past projects which were started by students include on-campus dance, chess and art programs for children.

Under the leadership of the Community Service Representative (CSR) , the Community Service Committee (formed by students who take a leadership role in community service) is responsible for organizing projects and for keeping the Houses informed about community service matters.

A heart-stopping video shows that a group of hikers were able to keep their cool as a curious black bear approached them—and one even stayed composed enough to snap a selfie （自拍）.

The black bear pulls one of the women by the leg with its paws（爪子）,moving towards her across the path as she tries to remain completely still. When the frightening animal stands up on its legs to smell her, the fearless walker can be seen taking a photo with the wild animal as it breathes down her neck.

The incident is reported to have happened on a path in Chipinque Ecological Park, Mexico, and the clip （剪辑片段）has had millions of views since being shared on social media. With the bear particularly interested in one member of the group, another walker remains frozen with her back to the animal as she stares still into the trees.

A third can be seen nervously fearing as the bear begins to approach her and shakes her hand in fear, but it circles back around to check out the first hiker for a second time. It pushes her off balance with its head before twice pawing at her legs as onlookers shout to try and warn the bear off.

The woman remains fearless as the animal isn't into her and continues walking up the path, giving the group an opportunity to make a swift exit.

It was shared on Twitter by former basketball player Rex Chapman, getting 2.7 million views, with the caption: "Oh, my goodness. She's a rock."

They give us paper and fuel, as well as vital ecological set-vices—like cleaning the air, storing carbon and providing home. We’re talking about trees, of course.

But human changes to the environment appear to be causing great changes to trees around the world. In a new study, scientists reviewed global research on trends in tree seedlings (幼苗)，growth, and death. They combined those data with an analysis deforestation (森林采伐). And they found worldwide, older trees are dying at a higher rate than in the past, due to reasons like rising air temperature, wildfires, drought(干旱) and pathogens (病菌).

“ And most of the drivers of that decrease in large, old trees are increasing themselves, such as temperature going up, droughts are more severe, wildfires, windstorms, and deforestation are all—although variable across the globe—they’re generally increasing. And so both the loss has already occurred, but we expect more continued loss of big, old trees,” said Nate McDowell, an earth scientist at Pacific Northwest National Lab, who was one of the study’s authors.

“So if we have an increasing rate of death, particularly of the larger, older trees, what’s left are the younger trees. So that’s why on average, through the loss of bigger, older trees, our forests are becoming younger and shorter. This trend is a problem, because old trees are vitally important.”

“The increase in death does limit the carbon storage of an ecosystem, and can force the system to become a carbon source to the atmosphere. The second reason is from a biodiversity viewpoint—old trees tend to house a higher biodiversity. And the third reason is linked with beauty: as a society we care about these trees. We have national parks named after these big trees.” Nate McDowell added.

Are you the type to run before breakfast in a morning? Working out on an empty stomach won't hurt you ——and it may actually help, depending on your goal.

Exercising before eating comes with the risk of feeling light-headed due to low blood sugar. You might feel tired or uneasy, and won't be able to work out as enthusiastically as you would have. A light amount of food is important for older adults over 55 to eat something before exercising — especially in the morning. But if your primary exercise goal is weight loss, exercising on an empty stomach may come with some promising benefits. There's some research to support the idea that working out in a fasted （禁食的）state can burn more fat than exercising in a fed state.

Working out on an empty stomach, however, may also not prove true for everyone. “Some people advocate for lasted exercise, but these people tend to be young and in amazing physical - shape,” says Douglas Paddon-Jones, a muscle physiology researcher and a professor of aging and health at the University of Texas Medical Branch. “They have no health problems, and what they're eating is super-high quality and carefully regulated.” On the other hand, working out in a fasted state without proper planning or professional oversight may run the risk of unhealthy body composition changes.       

For people who aren't athletes, fueling up with food before a workout may be the best way to get the most fat-burning benefit. “You don't want to fill up； you just want to give your body a burst of energy to power your training period. After you exercise, drink some water ——but wait 60 to 90 minutes before eating, ”says Shivani Sahni, director of the nutrition program at Harvard University's Instituted for Aging Research. “You're trying to take advantage of your promoted metabolic （新陈代谢）rate post-exercise, so if you can go an hour or an hour and a half without eating, you'll maximize the fat-burning response,” says she.