1 . Leave-No-Trace Camping

For those of us who love spending time in the great outdoors, wild spaces are very special. These are places we visit to recharge, or to fill our hearts with natural beauty.    1    If you feel this way, then you’re the perfect person to promote and practice Leave-No-Trace camping.

Its principles are to treat the wilderness the way a decent visitor would and leave everything just as you found it, with no evidence that you passed through.    2    That’s because your visit makes a minimal impact on the environment.

You can carry out these ideals in a number of ways. Begin by packing out all your litter. Whenever you go camping, take an empty trash bag with you and put all garbage into the bag. In addition, try not to damage vegetation.    3    Wherever you go, think about what your heavy shoes or boots are doing to the plants underneath and try to keep damage to a minimum.

It’s also important that you should not take things away from the wilderness. Rocks, plants, flowers and seashells are all part of the natural landscape.    4    Plus, many animals find homes and food in abandoned shells and flower-heads, and these are things they would miss if you collected them.

Leave-No-Trace camping is about being respectful and thoughtful. It’s about honoring the natural world and the creatures that live in it. If you love seeing an untouched mountain stream or a lovely field of wildflowers, then you’ve already taken the first step.    5    

2 . A future where insects make up a large part of the world’s diet is on the horizon. Despite the unpleasant nature of such cuisine, insects have been considered a delicacy in some parts of world for centuries. Their being low-fat and high-protein makes them a perfect choice for reducing hunger.     1    

Animal protein from livestock (家畜), such as cows, chicken and pigs, takes up 80 percent of the entire world’s farmland, despite only making up less than one-fifth of calories consumed globally.    2    Thus it would support a variety of biodiversity as nature intended.

Insects such as grasshoppers, meal worms and crickets are packed full of protein with much higher vitamin levels than pork or beef.    3    Greenhouse gas emissions through this process are also very little, with insect waste making excellent fertilizer (肥料) for agricultural soil.

It seems that insects are an ideal solution for many issues the world today is faced with.    4    Urban areas of Asia, Europe and North America are most likely to associate insects with dirt instead of as a tasty meal.

Times are changing. The European Union last year declared that meal worms were safe for human consumption. Cricket protein powder is also increasing greatly in popularity, with Canada rapidly becoming the largest market for the product.

    5    As we explore our solar system, efficient means of producing animal based-proteins will become vital. None are more efficient space-wise than insects. And the colonies of the future could well find themselves enjoying fried crickets with a pint of beer while watching the Martian sunset.

3 . On September 29, 2021, the US Fish and Wildlife Service declared it would be removing 23 species from its Endangered Species Act, including the ivory-billed woodpecker, various Hawaiian birds and freshwater fish, not because they had been pulled back from the edge of extinction, but because the USFWS believed these species would never recover, and were most likely extinct, therefore not requiring protection.

In April, 195 countries are getting together in China for a UN conference to discuss global agreements to protect nature and biodiversity, with the hope of finalizing an agreement to safeguard plants, animals, and ecosystems. However, the new strain (毒株) of Covid-19, Omicron, has potentially thrown the plans into a mess, and negotiators may switch to online talks if travel restrictions to China are put in place again.

“We can't go another four months without any progress” said Georgina Chandler, senior international policy officer at the Royal Society for the Protection of Birds. Conservationists are urging the talks to go ahead —   online if necessary — as the biodiversity crisis shows no sign of slowing up.

“Nature loss has not gone away and threatens both human lives and the global economy,” said Lin Li, director of global policy at the organization. “With one million species currently in danger of extinction, delaying action is not an option.”

Improving conservation and management of natural areas, such as oceans, forests, and wildernesses is crucial to safeguarding the ecosystems on which humans depend. However, forests are still being devastated, often for farming or commercial use. As trees absorb about a third of planet-warming emissions produced worldwide, stopping deforestation is key. At COP26 in Glasgow last November, world leaders plan to invest $19 billion in public and private funds to protect and restore global forests.

It’s easy to feel disheartened by the disappointing news, but the only way to stop more species suffering the same fate is to pay attention and take actions.

5 . Whenever I order food for delivery, I play a little game to guess how many sets of tableware(餐具)the restaurant will provide with my meal. Sometimes restaurants will throw in two, three or four sets for just one order. But I rarely need any tableware at all, and the waste goes into the trash or collects dust in a kitchen drawer.

Researchers working with Chinese technology group Alibaba tried a simple approach to this problem. Instead of just wastefully doling out tableware, the company required food-delivery customers in some cities in China to pick how many sets of tableware they wanted to receive.The default (默认设置)was set at zero. The result, published today in the journal Science, was a 638% increase in the share of no-tableware orders. If applied across China, researchers found, the approach would save nearly 22 billion sets of plastic tableware. The study doesn’t cover carbon emissions, but it’s safe to say that the impact would be significant. It struck me as a useful reminder of the many low-hanging fruits across the economy that can cut waste, and emissions.

Nudging its customers cost Alibaba nothing more than a few hours of software engineering time and the impact it brought was immense. The concept of nudging comes from the field of behavioral economics known as nudge theory. It suggests that a slight action can encourage good human behavior without the need for policies that limit choice or economic punishment that raises the cost of bad behavior. To nudge customers to eat better, for example, a restaurant might organize its menu by listing healthy options first and bury unhealthy ones at the bottom. More recently, some big companies like Google have also begun to use nudges to advance climate objectives.

Behavioral economics broadly, and nudges more specifically, aren’t without controversy. Some might think it assigns consumers responsibility for addressing environmental challenges. But there is another way to look at it. In the absence of necessary policy—and policy is needed一companies can help encourage a widespread shift of consumer behavior.

And all of that behavioral change can add up. The International Energy Agency found in 2021 that small behavioral changes in energy consumption such as walking instead of driving and adjusting the thermostat could in total shave off 4% of global emissions. The more that companies can do to facilitate such changes, the better.

6 . Once the red wolf’s historic range stretched from Long Island to Missouri and down to the Texas-Mexico border. But by 1972 their population was reduced to a small area along the Gulf coast due to habitat loss and hunting.

To conserve the species, 14 individuals were caught as part of a reproducing program. In 1980 their wild relatives were declared extinct — the caught wolves were all that was left and thus lots of genetic variation was lost. You can’t help it when you have so few founders.

Kristin Brzeski is an assistant professor at Michigan Technological University, whose research focuses on the conservation of genetics of wild animal populations. He thought this work had been an underdog scientifically and for conservation, for all wolves decreased in amount dramatically, especially the red wolves. Now, Brzeski and her co-workers have found a surprising new pool of red wolf genes that might help bring more diversity to the tiny population: they found the disappearing genes of red wolves in wild coyote populations. But why did this happen?

Remember: when a population is dying out, it might find the closest related species as their own best mate, so a red wolf and a coyote can have offspring. As a result, people can rediscover their genes in their coyote hybrid offspring. As red wolves are released back into the wild, reproducing with these coyotes could help the critically endangered species regain some of its genetic diversity.

This would be kind of the opposite direction: take the existing small population that still has red wolf genes that are so critical, and put them into a wild landscape with new genetic variation that they haven’t seen for 50 years or more. And all of a sudden, hopefully, this is like a super mix of genetic health and sort of a rebound that these animals can be wild and be themselves again.

The next step will include how to release red wolves in a way that takes advantage of the genes red wolves hiding in coyote populations. There should be a philosophy in our mind that we created this problem, so we should be responsible for fixing it.

8 . Open an app at your smart phone and scan the code bar on the garbage can. When you throw garbage into the garbage can, it will show the weight of the garbage and the points you can get from doing so.     1     It will become more popular in the future. Yes, we are talking about the smart garbage can.

    2     The environmental problems have become constant headaches in the development of those cities. Encouraging garbage classification has become an effective way.

In some cities, a variety of multifunctional smart garbage cans are being put into use. In Beijing, for example, a smart garbage can is equipped with an LED screen, which not only shows national policies on garbage classification but also shows the correct steps for garbage sorting. It can also calculate the weight of the garbage and the accumulated points one can get. They can be traded for some articles of daily use.     3     Its body is actually a screen. It is equipped with some Internal sensors. When people throw garbage into it, the internal sensors can automatically tell the types of the garbage. Meanwhile, people can see how to deal with them.     4    

Garbage disposal is a small issue that involves everybody each day. However, it is also a big issue.    5     With smart garbage cans in our daily life, the idea of garbage sorting will become more established. Our dream of building a greener and more beautiful China will come true so long as we start to make small changes right now.

9 . A Purdue University invention could save millions of taxpayer dollars and significantly reduce traffic delays. The new invention, a sensor that allows concrete to “talk”, decreases construction time and how often concrete pavement (路面) needs repairs while also improving the road’s sustainability and cutting its carbon footprint. Fixed directly into a concrete pour the sensor sends engineers more precise and consistent data about the concrete’s strength and need for repairs than is possible with currently used tools and methods.

“Traffic jams caused by repairs have wasted 4 billion hours and 3 billion gallons of gas, on a yearly basis. This is mainly due to insufficient knowledge and understanding of concrete’s strength levels,” said Luna Lu, who has been leading development of the sensor since 2017. “For instance, we don’t know when concrete will reach the right strength needed to accommodate traffic loads just after construction. The concrete may be put into use too early,leading to frequent repairing,” she added.

With the technology Lu and her team invented, engineers can directly monitor the fresh concrete and accurately measure many of its properties at once. The sensor notifies engineers via a smartphone app exactly when the pavement is strong enough to handle heavy traffic. The stronger the pavement is before being used by vehicles, the less often it will need to be repaired. By decreasing road repairs and construction timelines, this technology could reduce carbon dioxide that vehicles would have given off while waiting in traffic to get around a construction site.

Methods that the industry has used for more than a century call for testing large samples of concrete at a lab or onsite facility. Even though these tests are well understood by the industry, differences between lab and outdoor conditions can lead to inaccurate estimates of the concrete’s strength due to the different concrete compositions and temperatures of the surrounding area.