【推荐1】The environment has never been more in need of a helping hand from us. Schools, in particular, are in a great position to educate future generations and make sure that good environmental habits are learned and adopted from an early age. So, ranging from energy efficiency to recycling, here are our tips to make your school more eco-friendly and sustainable.

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Sending waste to landfill to slowly rot away isn’t the best use of the world’s resources. Plus, the space available for landfill is rapidly running out. Instead, boost recycling by providing appropriate and appealing facilities with clear signage (标识).     2    .

☆Turn off the lights and fit energy-efficient light bulbs

Saving energy used for lighting is one of the easiest things that we can do.     3    . Turn off lights when they’re not needed. Signage asking people to turn off the lights can act as a useful reminder.

☆Go paperless

    4    , with paper now being seen as outdated in many cases. This is good news for the environment, but it sometimes needs people to change how they do things. Look into options for creating and using fewer paper-based administration systems at school and think twice before printing or photocopying all those A4 pages, for example.

☆Reject plastic water bottles

Recent television programs and campaigns have raised the issue of waste plastic towards the top of the environmental agenda. In some ways, this isn’t surprising because, again, it is relatively easy for everyone to make a difference to the environment with minimal effort.     5    . Just stop buying brand-new water bottles that are used once and then recycled, and reuse existing bottles and containers instead.

【推荐2】Bioluminescence (生物发光) is a natural phenomenon wherein a chemical reaction within an organism’s body produces light. It can be found in many places in nature — fireflies, some mushrooms — but mostly in the deep sea.

Recently, Rambouillet, a small historic French town, has teamed up with a company called Glowee to turn the city into a full-scale bioluminescence laboratory. The goal is to change the way in which cities use light. The company uses marine (海的) bacteria harvested from the coast of France. It makes some of the town’s public light up in the cool blue of bioluminescence.

These bioluminescent bacteria are stored in a seawater filled tube, giving the bacteria room to float around and light up. The light provided by the bacteria is part of their natural metabolism, so producing the light requires no energy other than that which is needed to feed the organisms. This makes it much more environmentally friendly and sustainable than electric light, which consumes a huge amount of non-renewable energy.

“On the way to lighting up the world with bioluminescence, you have to feed the bacteria and add water as they grow. That’s not so easy. The phenomenon will be very temperature-dependent and I doubt that it will work in the winter. Also, bioluminescence is not very bright compared to electrical lighting, though they have improved the light intensity,” Carl Johnson, a professor from Vanderbilt University said.

One potential solution to these issues — and one that Glowee is looking into — is to remove the biological aspect of the whole process. Theoretically, luciferase (荧光素酶) can be removed from the bacteria and used to create light instead of the bacteria itself. Because luciferase is non-living, it doesn’t need to be fed. Creating new means of sustainable lighting is a way of being environmentally friendly without plunging the earth back into darkness.