1 . Identifying the chemical makeup of pigment (色素) used in ancient documents, paintings, and watercolors is critical to restoring and conserving the precious artworks. However, despite numerous efforts, scientists had been unable to determine the source of folium, a popular blue dye used to color manuscripts (手稿) in Europe during the middle ages — from the 5th to the 15th century. Now, a team of researchers from Portugal has finally uncovered the mysterious ingredient responsible for the gorgeous blueish-purple color that helped bring ancient illustrations and texts to life.

The research team began by poring over instructions penned by European dye makers from the 12th, 14th, and 15th centuries. They found what they were seeking in a 15th-century text entitled The Book on How to Make All the Color Paints for Illuminating Books. However, translating the instructions was no easy task. It was written in the now extinct Judaeo-Portuguese language, and though the source of the dye was traced back to a plant, no name was mentioned.

However, by piecing together suggestions from the text, the scientists were able to determine that the dye was made from the bluish-green berries of the chrozophora tinctoria plant. After an extensive search, the team found a few varieties of the plant growing along the roadside near the town of Monsaraz in south Portugal.

The detailed instructions gave the researchers critical clues — including the best time to pick the berries. “You need to squeeze the fruits, being careful not to break the seeds, and then to put them on linen (亚麻).” The scientist says the detail was important since broken seeds polluted the pigment, producing an inferior quality ink. The dyed linen, which was left to dry, was an efficient way to store and transport the pigment during ancient times. When needed, the artist would simply cut off a piece of the cloth and dip it with water to squeeze out the blue color.

Once the key ingredient had been identified, the researchers began to determine the dye’s molecular structure. To their surprise, they found that folium was not like any other known permanent blue dyes — it was an entirely new class of color, one they named chrozophoridin. “Chrozophoridin was used in ancient times to make a beautiful blue dye for painting.” the team wrote in the study. “Thus, we believe that this will not be our final word on this amazing plant and its story and that further discoveries will follow soon.”

3 . Become an Atlantis Jr. Aquarist and spend 3 days working with marine life! Food prepping to feeding the animals to snorkeling (浮潜) and learning about coral reefs, it’s a week of marine adventure!

5 . The beauty, majesty, and timelessness of a primary rainforest are indescribable. It is impossible to _______ on film, to describe in words, or to explain to those who have never had the awe-inspiring experience of standing in the heart of a primary rainforest.

Rainforests have _______ over millions of years to turn into the incredibly complex environments they are today. Rainforests represent a store of living and _______ renewable natural resources that for an immeasurably long period of time, by virtue of their richness in both animal and plant species, have _______ a wealth of resources for the survival and well-being of humankind. These resources have included basic food supplies, clothing, shelter, fuel, spices, industrial raw materials, and medicine for all those who have lived in the majesty of the forest. _______, the inner dynamics (动力学；相互作用的方式) of a tropical rainforest is a complex and fragile system. Everything is so _______ that upsetting one part can lead to unknown damage or even destruction of the whole. Sadly, it has taken only a century of human intervention to destroy what nature designed to _______ forever.

The scale of human _______ on ecosystems everywhere has increased enormously in the last few decades. Since 1980 the global economy has tripled in size and the world population has increased by 30 percent. Consumption of everything on the planet has risen — at a cost to our _______. In 2001, The World Resources Institute estimated that the demand for rice, wheat, and corn is expected to grow by 40% by 2025, increasing irrigation water demands by 50% or more. They further reported that the demand for wood could double by the year 2050; ________, it is still the tropical forests of the world that supply the most part of the world’s demand for wood.

In 1950, about 15 percent of the Earth’s land surface was covered by rainforest. Today, more than half has already gone up in ________. In fewer than fifty years, about half of the world’s tropical rainforests have fallen ________ to fire or deforestation, and the rate of destruction is still ________. Unbelievably, more than 200,000 acres of rainforest are burned every day. That is more than 150 acres lost every minute of every day, and 78 million acres lost every year! More than 20 percent of the Amazon rainforest is already gone, and much more is severely ________ as the destruction continues. If nothing is done to control this ________, the entire Amazon could well be gone within fifty years. Fewer rainforests mean less rain, less oxygen for us to breathe, and an increased threat from global warming.

6 . Animal-rights activists often complain that cute beasts get more sympathy than equally deserving ugly ones. If so, one would think a lovely creature like the mink (貂)would be easy to protect. Yet in the Netherlands, mink is the only animal that can still legally be farmed for their fur. That is about to change. On August 28th the government brought forward to this year a ban on mink-farming that had been scheduled to take effect in 2024. The timetable was sped up not because mink had become more adorable, but because they can contract covid-19 and spread it to humans.

Dutch farmers normally raised about 2.5 million minks a year, making the Netherlands the world's fourth-largest producer after Denmark, China and Poland. In April, a couple of minks and the farm hands who tended them were diagnosed with covid- 19. Genetic tracing showed that at least two workers had probably been infected by mink, rather than the other way around. The affected animals were destroyed and stricter hygiene rules imposed, but by summer the virus had spread to a third of the country's farms. In June, parliament voted to shut down the industry as soon as possible, and the cabinet agreed.

That was a win for the Netherlands Party for the Animals, which has four seats in the 150-memeber parliament. In 2013, it helped pass the law that gave mink farmers until 2024 to get out of the business.

Now the party and its supporters object to the generous compensation （补偿）the government has offered for bringing forward the deadline: $150 million, or $1 million per farmer. Some members of parliament claim that the compensation paid for destroying the infected minks was higher than the market price for their fur.

Fur farmers any modern standards allow minks to be raised humanely, and that they are not a big reason for the spread of the virus. But minks tend to live by themselves instead of living in groups: animal-rights advocates say they cannot be raised humanely in small cages. As for covid-I9, the worry is that mink could serve as a medium for it to attack human immunization （免疫）programs. The industry's value is modest （framers put it at $150 million 0 $200 million, activists at under $100 million）, and polls show the public overwhelmingly opposes it. "In a democratic country, that widespread belief has to translate into a political decision to ban fur farming,"   says Esther Ouwehand, leader of the Party for the Animals. The farmers accept they are shutting down. The remaining argument is over money.

We Must Act Now to Protect Our Threatened Oceans

Last week, climate strikers young and old came out in force to call upon the government to act with greater urgency in tackling the global climate emergency.

They     1     very well feel a need to step up their demands upon hearing the awful findings of the special report on the ocean and cryosphere v(低温层) in a changing climate, released on Wednesday by the International Panel on Climate Change. The report highlighted the intimate connections which exist between our climate, our oceans and our very existence. It presented irrefutable scientific evidence     2     our warming climate is placing marine and frozen areas of our planet in grave danger, with some changes happening at a much larger scale and faster rate than previously     3     (predict).

Urgent action is needed     4     we are to keep our planet—and our oceans—safe and habitable. This requires     5     (ambitious) targets to reduce our carbon emissions and to shift our energy system away from polluting fossil fuels towards 100% renewable energies.

Change is also needed in international cooperation around     6     our oceans are protected.

It is hoped that early next year UN member states     7     (sign) a strong global ocean treaty that could pave the way for the creation of marine sanctuaries(禁猎区),     8     (place) at least 30% of oceans off limits to human activities such as commercial fishing and oil and gas exploration. This is a crucial step towards building the resilience of marine ecosystems and securing a sustainable future for those     9    livelihoods depend on our oceans.

The government has been a vocal champion for ocean conservation. Now is the time for Britain     10     (turn) political will into decisive action by leading the way with the forging of a new global ocean treaty. The prime minister’s direct involvement could make the difference between a watered- down agreement or a powerful one.

9 . The Ebro Delta, in Spain, famous as a battleground during the Spanish Civil War, is now the setting for a different contest, one that is making rice farmers fight against two enemies: the rice-eating giant apple snail, and rising sea levels. What happens here will have a bearing on the future of European rice production and the overall health of southern European wetlands.

Located on the Mediterranean, just two hours south of Barcelona, the Ebro Delta produces 120 million kilograms of rice a year, making it one of the continent’s most important rice-growing areas. As the sea creeps into these fresh-water marshes, however, rising salinity (盐度) is hurting rice production. At the same time, this sea-water also kills off the greedy giant apple snail, an introduced pest that feeds on young rice plants. The most promising strategy has become to play one enemy off against the other.

The battle is currently being waged on land, in greenhouses at the University of Barcelona. Scientists working under the banner “Project Neurice” are seeking varieties of rice that can withstand the increasing salinity without losing the absorbency that makes European rice ideal for traditional Spanish and Italian dishes.

“The project has two sides,” says Xavier Serrat, Neurice project manager and researcher at the University of Barcelona, “the short-term fight against the snail, and a mid- to long-term fight against climate change. But the snail has given the project greater urgency.”

Originally from South America, the snails were accidentally introduced into the Ebro Delta by Global Aquatic Technologies, a company that raised the snails for fresh-water aquariums (水族馆) but failed to prevent their escape. For now, the giant apple snail’s presence in Europe is limited to the Ebro Delta. But the snail continues its march to new territory, says Serrat. “The question is not whether it will reach other rice-growing areas of Europe, but when.”

Over the next year and a half investigators will test the various strains of salt tolerant rice they’ve bred. In 2018, farmers will plant the varieties with the most promise in the Ebro Delta and Europe’s other two main rice-growing regions along the Po in Italy, and France’s Rhone. A season in the field will help determine which, if any, of the varieties are ready for commercialization.

As an EU-funded effort, the search for salt-tolerant varieties of rice is taking place in all three countries. Each team is crossbreeding a local European short-grain rice with a long-grain Asian variety that carries the salt resistant gene. The scientists are breeding successive generations to arrive at varieties that incorporate salt tolerance but retain about 97 percent of the European rice genome (基因组).

10 . Climate change disproportionately affects the world’s most vulnerable people, particularly poor rural communities that depend on the land for their livelihoods and coastal populations throughout the tropics. We have already seen a chain of tough suffering that results from extreme weather events, such as hurricanes, floods, droughts, wildfires, and more.

For remedies, advocates and politicians have tended to look toward cuts in fossil-fuel use or technologies to capture carbon before it enters the atmosphere – both of which are crucial. But this focus has overshadowed the most powerful and cost-efficient carbon capture technology in the world. Recent research confirms that forests are absolutely essential in reducing climate change, thanks to their ability to absorb and isolate carbon. In fact, natural climate solutions such as conservation and restoration of forests, along with improvements in land management, can help us achieve 37 percent of our climate target of limiting warming to a maximum of two degrees Celsius above pre-industrial levels, even though they currently receive only 2.5 percent of public climate financing.

Forests’ power to store carbon dioxide is staggering: one tree can store an average of about 48 pounds in one year. Intact (完整的) forests could take in the CO₂ emissions of some entire countries.

For this reason, policymakers and business leaders must create and enforce policies to prevent deforestation, foster reforestation of degraded land, and promote the sustainable management of standing forests in the fight against climate change. Protecting the world’s forests ensures they can keep performing essential functions such as producing oxygen, filtering water and supporting biodiversity. Not only does the world’s entire population depend on forests to provide clean air, clean water, oxygen and medicines, but l.6 billion people also rely on them directly for their livelihoods.

Unfortunately, a huge amount of forest continues to be converted into agricultural land to produce a handful of resource-intensive commodities — despite zero-deforestation commitments from companies and governments. So now is the time to increase forest protection and restoration. This action will also address a number of other pressing global issues. For example, in less developed and rural areas — especially in the tropics — community-based forest-management programs can forge pathways out of poverty. In the Petén region of Guatemala, for instance, community-managed forests boasted a near-zero deforestation rate from 2000 through 2013, as compared with 12 percent in nearby protected areas and buffer (缓冲) zones. These communities have built low-impact, sustainable forest-based businesses that have stimulated the economy of the region enough to fund the creation of local schools and health services. Their success is especially noticeable in a location where, outside these community-managed zones, deforestation rates have increased 20-fold.