3 . Heat waves are becoming more common in parts of the United States — and that means more people running their air conditioners for longer. But those air conditioners can make the problem worse, giving off greenhouse gases as they work that contribute heavily to climate change.

SkyCool Systems is trying to break that cycle, using technology that promises to offer buildings an alternative means to cool down in a similar way to how the planet cools itself. “Our planet naturally cools itself by sending heat out in the form of infrared light (红外线) or radiation,” said Eli Goldstein, SkyCool’s cofounder and CEO. “We do this through rooftop panels, which look like solar panels but actually do the opposite, reflecting 97% of the sunlight that hits them and cooling the surface below,” said Goldstein.

SkyCool’s model involves fixing a network of pipes below those panels. These pipes are filled with water, which is kept cool by the panels and then flows into an air conditioning system. This process is designed to take pressure off the system’s cooling mechanism. And because the panels cool naturally and don’t need external power to function, it helps the entire system use less electricity.

A Grocery Outlet store in California, which has been using SkyCool’s system since last year, says it saw a marked drop in its electrical bills. Jesus Valenzuela, the store manager, estimates that the panels have saved his store roughly $3,000 a month.

But perhaps the biggest barrier to making the technology ubiquitous (无处不在的) is its relatively high cost. Increasing production could help bring the cost down, Goldstein said, particularly for developing countries in Asia and Africa where SkyCool hopes to eventually expand. For now, the company is focused on commercial applications of the technology, though it hopes to start setting up panels on the roofs of individual homes. “We’re just excited to be able to use this new technology for good,” Goldstein said.

4 . Some exhibitions and new displays create lots of waste. So museums are increasingly aware of the role they have to play in dealing with that. At Manchester Museum, John Miller and Robert O’Conner have developed their own approach to creating a circle from the exhibition, to exhibition changeover, and back to the museum workshop, reusing materials in any way they can.

Holding different exhibitions and displays means that museums are often left with structures (结构体) that won’t be used again. At the end of an exhibition, John and Robert carefully take down and cut all materials into workable units, ready to be reused wherever needed. When Pinc College based at Manchester Museum needed new classrooms, the workshop team were able to use completely recycled materials to build them.

While it’s easy to think of new as being better, reusing materials doesn’t mean you can’t create beautiful displays. Last year, the museum placed Illuminating Nature, a surprising window display showing some objects under UV light. Almost every part of it was reused. The only thing that needed to be bought was the UV lights, proving you don’t need to spend much to create something impressive.

No matter how many materials you try to reuse there will always be something left over. Why not keep an eye out for charities or local groups who would welcome a donation? As with many museums, paint is often bought for an exhibition. And there will be a few extra cans left over. Manchester Museum usually takes them to Betel UK, a charity that supports people losing their jobs. The paint is used by Betel UK in their workshops for people to learn special skills and then refresh furniture (家具) which is then sold in their shops.

The impressive efforts of John and Robert are a shining example of a museum team that is establishing best practices and proving its determination to build a greener world. Their work inspires other teams to move away from the growth-model thinking that’s been influential in museums for the past twenty years.

7 . Saving the environment might seem like a tall order, but living an environmentally friendly life is actually quite easy.     1     Read on for some practical tips on how a single individual can help save the environment.

Recycle

Recycling is a simplest lifestyle to lower the amount of environmental waste. Every resident can get involved by taking advantage of nearby recycling services.     2     For instance, some places may not accept glass, while others might require you to separate the different materials. If you dispose of something improperly, the whole load will likely be rejected and end up in a landfill.

Buy locally-sourced foods

Eating fresh, local food consumes less fuel and packaging materials. Shipping products by truck, rail, flight, or boat creates pollution and goes against an environmentally friendly lifestyle. Instead, shop at local farmers’ markets and grocery stores stocking locally-sourced products.     3     .

Cut back on driving

Applying alternate forms of transportation consumes less gasoline.     4     If that isn’t an option, consider organizing carpools or using public transportation. By doing this, you help reduce traffic jams and the overall amount of gasoline consumption. Also, combine multiple trips into one to help minimize the distance traveled and fuel consumed.

    5    

Advocacy allows more people to create a positive impact. Spread the word about environmental conservation by sharing some of the lifestyle changes you’ve made on social media and in conversations with people around, calling on everybody to play a role.

9 . For many young Canadians, planting trees is more than just a job. It’s a way of ______   and it could be catching on, thanks to a popular ______ by Leslie. While working for a logging company, the 29-year-old filmed herself using the ______ method that allowed her to plant 4,545 trees in a single day. She said that the work is incredibly ______.

Planting trees is not easy work, according to Leslie. Not only is it ______ tiring, but it also exposes laborers to the bad weather. “It could start the day off ______ and then minutes later, it will just be raining or snowing. You never know what to ______,” she described. “There were some days that we were planting through a heat ______, so we had like 37 to 40 degree weather for several days straight and that was really ______.”

So far, Leslie has planted a total of 372,290 trees in the past few years. ______, she’s still nowhere near beating the Guinness World record. That honor ______ Kenny Chaplin, who once planted 15,170 trees in 19 hours. After 35 years on the job, he says he’d ______ it to anyone.

“I think every parent in Canada should ______ their kid out tree planting because it will turn them into a worker,” he ______ . “They’ll learn how to work, they’ll have ______ and they’ll have money in their pockets.”

10 . Since the 1920s, a little-known policy called parking minimums has shaped many Americans’ life. In major cities, this meant that any type of building needed to reserve a certain number of parking spaces to accommodate anyone who might visit.

But as the country attempts to cut carbon emissions (排放), we should rethink what transportation and public space look like, especially in cities. Earlier this month, the city of Austin, Texas, became the latest community to undo parking minimums.

“If we want half of all trips to be in something other than a car, then we can’t, as a city, in my opinion, demand that every home or business have at least one parking space for each resident or customer,” said Zohaib Qadri, the Austin city council member who introduced the measure. Reducing dependency on cars was a huge push for the initiative in Austin. Qadri hopes the measure also will lead to a more sustainable city.

The undoing of this law could pave the way for cities to build denser (密集的) housing, increase public transit options, and reduce their carbon emissions, according to Donald Shoup, an engineer and professor. “It isn’t just the housing crisis and climate change; it’s a traffic jam; it’s local air pollution; it’s the high price of everything—except parking,” said Shoup.

Climate change and air pollution are particularly costly outcomes, with both estimated to cost the US billions of dollars every year. Parking spots, meanwhile, can run in the tens of thousands of dollars to construct, with one estimate putting that figure at almost $30, 000 per spot.

But undoing parking minimums does not mean that all parking will disappear overnight. It means that any off-street parking built will not need to meet any minimum standard.

“Austin is the same city that it was two weeks ago,” said Shoup. “It’s going to take quite a while for that city to really get the benefits of their parking space reforms. And so it just removes a roadblock and a barrier to other reforms.”