【推荐1】Conservationists go to war over whether humans are the measure of nature’s value. New Conservationists argue such trade-offs are necessary in this human dominated epoch. And they support “re-wilding”, a concept originally proposed by Soule where people curtail economic growth and withdraw from landscapes, which then return to nature.

New Conservationists believe the withdrawal could happen together with economic growth. The California-based Breakthrough Institute believes in a future where most people live in cities and rely less on natural resources for economic growth.

They would get food from industrial agriculture, including genetically modified foods, desalination intensified meat production and aquaculture, all of which have a smaller land footprint. And they would get their energy from renewables and natural gas.

Driving these profound shifts would be greater efficiency of production, where more products could be manufactured from fewer inputs. And some unsustainable commodities would be replaced in the market by other, greener ones — natural gas for coal, for instance, explained Michael Heisenberg, president of the Breakthrough Institute. Nature would, in essence, be decoupled from the economy.

And then he added a caveat: We are not suggesting decoupling as the paradigm to save the world, or that it solves all the problems or eliminates all the trade-offs.

Cynics (悲观者) may say all this sounds too utopian, but Breakthrough maintains the world is already on this path toward decoupling. Nowhere is this more evident than in the United Sates, according to Iddo Wernick, a research scholar at the Rockefeller University, who has examined the nation’s use of 100 main commodities.

Wenick and his colleagues looked at data carefully from the U.S. Geological Survey National Minerals Information Center, which keeps a record of commodities used from 1900 through the present day. They found that the use of 36 commodities (sand, iron ore, cotton etc.) in the U. S. Economy had peaked.

Another 53 commodities (nitrogen, timber, beef, etc.) are being used more efficiently per dollar value of gross domestic product than in the pre-1970s era. Their use would peak soon, Wernick said.

Only 11 commodities (industrial diamond, indium, chicken, etc.) are increasing in use (Greenwire, Nov.6), and most of these are employed by industries in small quantities to improve systems processes. Chicken use is rising because people are eating less beef, a desirable development since poultry cultivation has a smaller environmental footprint.

The numbers show the United States has not intensified resource consumption since the 1970s even while increasing its GDP and population, said Jesse Ausubel of the Rockefeller University.

“It seems like the 20th-century expectation we had, we were always assuming the future entailed greater consumption of resources,” Ausubel said. “But what we are seeing in the developed countries is, of course, peaks.”

【推荐2】Even when communing with nature we depend on technology for help-but then, so did Thoreau at Walden Pond.

Walking in the same woods yesterday, I let myself wander at random, communing with nature.

I took in beautiful scenery near and far thanks to my progressive-lens eyeglasses. Occasionally I’d pull out my smartphone to take pictures on anything interesting. I recorded an inner monologue (独白) with a background of all sounds of the forest. At times, I consulted my smart watch to check on my heartbeat, mileage and calorie burn. Eventually I realized I was quite lost. Not a problem of course. Online maps came to my rescue.

But something bothered me. In what I’d intended as a nature experience, here I was using very high technology to help myself out. This insight set off a reconsideration of everything that happened during my “nature walk”, which had been technologically enhanced every step of the way. I’d been functioning as a man-machine combination: a cyborg.

What would the true naturalist Thoreau think of that? My first thought was that he’d be shocked. But later I did some research. Thoreau enjoyed what his spyglass discovered, like this eagle from his journal:

Lying on the ground with my glass, I could watch him very easily…till I almost lost him in the clouds… I think I have got the worth of my glass now that it has revealed to me the white- headed eagle.

Famously, Thoreau always set out equipped with a walking stick, which he used not only for support but also to take measurements of water and snow levels. His hat was also a tool, which he called his “botany-box”. And he was prepared even with needles and thread, so when coming out of the woods, he was “the best dressed”. Clearly, Thoreau was a bit of a cyborg himself.

Thinking more deeply, I realized we’ve come a long way from our hunter-gatherer ancestors, who walked from necessity and relied on nature’s gift. Cyborgs are us.

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【推荐1】A simple gesture can be formed into a child’s memory so quickly that it will cause the child to give a false answer to a question along with that gesture. A new finding suggests that parents, social workers, psychologists and lawyers should be careful with their hands as well as their words.

While memories of both adults and children are easy to react to suggestion, those of children are known to be particularly influenced, said lead researcher Sara Broaders of Northwestern University. Kids are used to looking to adults to tell events for them and can be misled even if not intentionally.

Previous research, for example, has shown that detail-loaded questions often cause false answers; when asked, say “Did you drink juice at the picnic?” the child is likely to say “yes” even if no juice had been available. It is not that the child is consciously lying, but rather the detail is quickly formed into his or her memory.

To avoid this problem, social workers have long been advised to ask children only open-ended questions, such as “What did you have at the picnic?” But an open-ended question paired with a gesture, briefly meaning a juice box, is treated like a detailed question. That is, children become likely to answer falsely.

And it isn’t just a few kids: 77% of children gave at least one piece of false information when a detail was suggested by an ordinary gesture. Gestures may also become more popular when talking with non-fluent language users, such as little kids, Broaders said as hand movements can impart meaning of unfamiliar words and phrases. “It certainly seems reasonable that adults would gesture more with children.”

In general, Broaders advises parents and other adults to “try to be aware of your hands when questioning a child about an event. Otherwise, you might be getting answers that don’t reflect what actually happened.”

【推荐3】Marco Springmann and his colleagues, at the Oxford Martin School’s Future of Food Programme, built computer models that predicted what would happen if everyone became vegetarian by 2050. The results indicate that if the world went vegan (严格的素食主义者), the greenhouse gas emissions declines would be around 70%.

In the US, for example, an average family of four emits more greenhouse gases because of the meal they eat than from driving two cars---but it is cars, not steaks, that regularly come up in discussions about global warming.

Food, especially livestock (牲畜，家畜) also takes up a lot of room. 68% of agricultural land in the world is used for livestock. When these lands become grasslands and forests, they would capture carbon dioxide and further ease climate change.

However, if the whole world went vegan, there would be negative effects too. First, it is necessary to keep livestock for environmental purposes. “I’m sitting here in Scotland where the Highlands’ environment is very man-made and based largely on grazing by sheep,” says Peter Alexander, a researcher in socio-ecological systems modeling at the University of Edinburgh. “If we took all the sheep away, the environment would look different and there would be a potential negative impact on biodiversity.”

Plus, meat is an important part of history, tradition and cultural identity. Numerous groups around the world give livestock gifts at weddings, celebratory dinners such as Christmas with turkey or roast beef.

And nowadays, moderation in meal-eating’s frequency and portion size is key to solving these conflicts. “Certain changes would encourage us to make healthier and more environmentally friendly dietary decisions,” says Springmann, “like putting a higher price lag on meat and making fresh fruits and vegetables cheaper.”

In fact, clear solutions already exist for reducing greenhouse gas emissions from the livestock industry. What is lacking is the will to carry out those changes.