2 . Earth Hour is organized by the World Wide Fund for Nature. It's a big event usually at the end of March every year. On this evening, people “go dark”.     1    

It's true that turning off lights for just one hour saves only a small amount of power.    2    On one level, joining in Earth Hour makes people think about the problem of climate change and what we can do in everyday life to protect nature.

But on another level, a large number of people’s acting together sends a powerful message to governments and companies.     3     They begin considering green issues when big decisions.

The logo(标识) of Earth Hour is “60+” .The number 60 is for the 60 minutes of Earth Hour.     4     In fact, people who join in Earth Hour say that taking part makes them want to do more for the environment.

    5     Musicians give concerts by playing acoustic(原声的) instruments instead of electric ones, and using candles instead of electric lights. Celebrity chefs have created special recipes for families to prepare and eat by candlelight. Tree-planting sessions, group walks and runs are also among the options.

3 . During the COVID-19 crisis, even the simple act of buying groceries has been completely transformed. For seniors this task is even more challenging. Concordia University's ACT project team has joined with community partners in the neighbourhood to fill this gap. They've rapidly created a new program-COVID-19 Grocery Response NDG.

The program uses a model that pairs volunteers with seniors, based on availability and language. Those volunteers are trained by ACT's team via video conferencing and then given a list of older adults. The volunteer calls the individuals and takes their order, working with grocer offerings of a Provigo store in the area. When the call is over, the order gets sent to Provigo, which gathers and delivers the order to the senior. It won't take the place of the work of the food bank; seniors are paying for their groceries.

There is also an important social element to the call, which doubles as a friendly check -in. The volunteer chats a bit with the senior, who may be very lonely and anxious. One volunteer says it has also been a rewarding experience and gives her the opportunity to help others while staying at home, which they are all being encouraged to do.

The program is a response to a number of factors, including the fact that many older adults are on a fixed income and may not have the internet access needed to order groceries online. It is targeting seniors who aren't able to access New Hope's usual meals on wheels service.

So far the project is a success, with a growing number of volunteers and seniors. As for what's next, Concordia is optimistic but acknowledges that the team will need to be nimble to accommodate the changing realities of the COVID-19 pandemic. We are at a critical time and we need to do everything we can, together, to help out.

4 . Philadelphia's Magic Gardens makes up a folk art center, gallery space, and a nonprofit organization showcasing the works of mosaicist（镶嵌设计师）Isaiah Zagar.

Zagar devoted himself to beautifying the South Street neighborhood in the late 1960s, when he moved to the area with his wife Julia. The couple helped the area by purchasing and repairing some old buildings, often adding colorful mosaics on both their private and public walls. The first such project was Julia's still-busy folk art store, the Eyes Gallery at 402 South Street.

Zagar started working on the Magic Gardens in 1994 in the deserted parking lot near his studio. He spent the next fourteen years sculpting multi-layered walls and decorating the 3, 000 square foot space. The installation（装置艺术），primarily consisting of found objects and contributions from the community, finally covers half a city block with countless patterns and colors. It shows Zagar's many artistic influences, as well as the events and experiences of his life.

In 2002，the owner of the once-unused parking lot decided to sell the land in response to rising South Street property values. Unwilling to witness the destruction of Zagar's neighborhood art environment, the community rushed to support the artist. His creation, newly titled Philadelphia's Magic Gardens, turned into a nonprofit organization with the intention of preserving and promoting Zagar's works at the site of the Magic Gardens and throughout the South Street region.

The Magic Gardens is now a permanent art institution that is open to visitors throughout the year. Trained guides are available to lead tours of the Magic Gardens and Zagar's surrounding public wall paintings. In addition, it offers monthly mosaic workshops led by Zagar himself, and regularly hosts concerts, dance performances, and other public events.