1 . Earth Hour is an annual event, asking you to switch off all your lights for one hour in positive change for our planet. It is organized by the World Wide Fund for Nature and it’s a big event usually at the end of March every year.     1    , which means switching off all lights everywhere at the same time for one hour.

Earth Hour started in Australia in 2007, when 2.2 million people in Sydney turned off all unnecessary lights for an hour.     2    , and many countries around the world have taken part.

It’s true that switching off the lights for just one hour saves only a little power.     3    . Joining in Earth Hour makes people think about the problem of climate change and how to protect nature so that people can enjoy healthy and sustainable lives. Besides, many people acting together pushes governments and companies to consider green issues when making big decisions.

    4    . The number 60 is for the 60 minutes of Earth Hour, and the plus invites people to keep on taking action even after Earth Hour is finished. In fact, people joining in Earth Hour say that taking part in it inspires them to do more for the environment. The climate activist Greta Thunberg says, “Earth Hour is every hour of every day.”

Why is it in March? At the end of March in the northern and southern hemispheres (半球), the days and the nights are almost of the same length.     5    , so it is dark in the evening in each country for the Earth Hour switch-off.

2 . A NASA climate research scientist, Cynthia Rosenzweig, who has spent much of her career explaining how global food production must adapt to a changing climate, was awarded the World Food Prize on Thursday.

“We basically cannot solve climate change unless we address the issues of the greenhouse gas emissions from the food system, and we cannot provide food security for all unless we work really hard to develop adaptable agricultural systems,” she told The Associated Press in an interview.

Rosenzweig, who describes herself as a climate impact scientist, grew up in Scarsdale, New York, a suburban area that she said led her to seek out life in the country. Later, she moved to Italy, and developed a passion for agriculture. After returning to the United States, she focused her education on agronomy (农学).

She worked as a graduate student at the Goddard Institute for Space Studies in the early 1980s, when global climate models were beginning to show the effects of human-generated carbon dioxide on the global climate. As the only team member studying agronomy, she researched the impact on food production and has been working since then to answer those questions.

Rosenzweig’s work led to the Environmental Protection Agency’s first prediction of the effects of climate change on the nation’s agricultural regions in the agency’s assessment of the potential effects of climate change on the United States in 1988. She was the first to bring climate change to the attention of the American Society of Agronomy and she organized the first sessions on the issue in the 1980s. The research organization she founded, AgMIP, develops adaptation packages, which could include the use of more drought-tolerant seeds and improved water management practices.

Even the largest agribusiness corporations have shown a willingness to listen. Some models her colleagues have developed show how businesses could be effected by climate change and how they have a role to play in reducing the impact on climate.

“It’s really a global partnership of all the global food systems to come together to restrain climate change and maintain the food security for the planet,” she said.

What you need to know about the sandstorm in Beijing

A: sandstorm swept across Beijing and several northern areas in China on Monday.Where did the sandstorm come from? How long will it last? Lets take     1     look.

Q: Where did the sandstorm come from?

A: The sandstorm originated in the Gobi Desert areas of Mongolia. Strong winds picked up the sand and dust,     2     were then transported southward and eastward at high altitudes and eventually settled in downstream (顺流的) are as such as Beijing,    3     (result) in the sandstorm.

Q: When will the dusty weather     4     (weak)? Should we expect more sandstorms this week?

A: According to the National Meteorological Center, the sandstorm     5     (moderate) starting from next Tuesday.

Q: Why are sandstorms in North China so frequent this year?

A: There are multiple     6     (reason).The cold air activity has remained active in March     7     April. Mongolian cyclones (旋风) and cold fronts (冷锋) have transported sand and dust from the sand source areas downstream to even more southern and farther areas.

Q: Is a yellowish sky always an indicator of a sandstorm?

A: Not exactly. Only when the sandy and dusty weather reaches a certain     8     (intense) can it be called a sandstorm.

Q: What precautions to take in dusty weather?

A: Stay indoors as much as possible, and keep windows and doors closed. Use air purifiers, sprinkle water, use humidifiers, and mop the floor with a wet cloth     9     (remove) dust.Wear masks when going outdoors, and clean your face and nose when returning home; When driving, reduce speed, turn on headlights, and drive     10     caution.

4 . Many areas of the world suffer from low rainfall, and with climate change, the water shortage (短缺) is increasingly becoming a problem in some places. So more and more people, companies and governments are now looking for ways to make houses completely self-sufficient in water－providing it and dealing with it themselves.

In some houses in rural areas of Australia, the owners are doing exactly this. Although the houses are in a suburb called Gelorup, only 10 kilometres from the city of Bunbury, they do not have water supplied to them. Instead, water is collected on the roof and from the channels (排水沟) and then run into underground pipes that lead to a large water tank (箱). From the tank the water purified (净化) in the underground system is sent back to the house to meet all household needs from drinking to cleaning toilets. Because of this, no one in the households can use strong chemicals for cleaning and washing.

We produce different kinds of water waste from our homes. Black water is the waste water that comes from our toilets, but most of our waste water is actually grey water. This is the waste water produced by people having showers or baths, washing their hands or faces in the sink, and washing their clothes or dishes. However, while grey water is not drinkable, there are many ways in which it can be reused around the home. With water recycling systems, grey water can be collected and made safe enough to use on gardens and for cleaning toilets.

The process of treating and transporting water produces large amounts of carbon emissions. So if we all began to recycle our grey water, it could radically reduce the impact on the environment. The use of water recycling systems would also help with the problems of water shortage faced in many areas of the world. Water recycling, it seems, must have an important place in our future.

5 . Cristina Mittermeier is a marine biologist, activist and multi-award-winning photographer who has given her life to ocean protection. Recognised as being one of the world’s most influential conservation photographers, Cristina has travelled to 132 countries to achieve her goal — to communicate the immediate need to protect wild places.

She began her career as a marine biologist, but soon realised that she could better work for the interests of the oceans and the planet through her camera than with scientific data. In her eyes, science is basic to understanding what is happening to our planet, but it fails to convey (传递) the emotions that make us care.

According to Cristina, photography allows us to humanise (使人性化) stories and create something meaningful, and she had an urgent need to share the difficult situation of the planet. For her, it’s all about the emotional connections we can establish with the subject matter. She loves creating pictures that engages people in conversations and makes them stop and think. Establishing a successful career as a photographer has not been an easy journey. She worked hard at teaching herself the basics of photography and then she went back to school to learn more about the underpinnings of fine art.

When asked what has inspired her focus on marine life, she replied, “The ocean is barely mentioned but it is the largest ecosystem on our planet and is the ecosystem that has the most influence on Earth. It absorbs at least 25% of all emissions and most of the heat on our planet. I want people to recognise that the ocean isn’t just hurt by climate change — it is our solution. If our oceans die — and they are dying — we will die with them. Life on Earth is not possible without a living ocean.”

Bhutan’s snow leopard (雪豹) population     1     (increase) by 39.5% since 2016, according to a new survey. Findings from over 10,000 camera trap images confirmed the presence of 134 snow leopards in the country, an     2     (impress) jump from the baseline of 96 snow leopards in 2016.

    3     survey showed promising evidence that Bhutan’s conservation efforts impact snow leopard populations     4     (positive). It involved 310 camera traps across 2.2 million acres of the big cat’s habitat.

“With less than 3% of the habitat surveyed, there are serious knowledge gaps in the population status of snow leopards,” said Dechen Dorji, Senior Director for Asia, Wildlife Conservation. “A 39.5% increase in Bhutan’s snow leopard population is remarkable and calls for the urgent need to     5     (strength) the population assessment efforts. These amazing     6     (creature) deserve our continued care and protection from illegal hunting, habitat destruction, and conflicts with people. Finding effective co-existence measures between local communities     7     snow leopards must continue to be at the top of the list.”

Although the news is uplifting, the species is still listed as endangered by the International Union for Conservation of Nature. It     8     (threaten) globally by habitat losses, food shortage, conflicts with humans, and the climate crisis,     9     (request) continued protection to address these threats,     10     also affect the other wildlife in their habitat.

8 . New research links outdoor air pollution — even at levels considered safe — to an increased risk of diabetes (糖尿病) globally, according to a study from the VA St. Louis Health Care System. The findings raise the possibility that reducing pollution may lead to a drop in diabetes cases in heavily polluted countries such as India and less polluted ones such as the United States.

Diabetes is one of the fastest growing diseases, affecting more than 500 million people worldwide. The main drivers of diabetes include eating an unhealthy diet, having a sedentary lifestyle and obesity, but the new research indicates the extent to which outdoor air pollution plays a role.

“Our research shows a significant link between air pollution and diabetes globally,” said Ziyad Al-Aly, MD, the study’s senior author and an assistant professor of medicine at the University of Washington. “We found an increased risk, even at low levels of air pollution currently considered safe by the US Environmental Protection Agency (EPA) and the World Health Organization (WHO). This is important because many industry lobbying (游说) groups argue that current levels are too stringent and should be relaxed. Evidence shows that current levels are still not sufficiently safe and need to be tightened.”

While growing evidence has suggested a link between air pollution and diabetes, researchers have not attempted to quantify that burden until now. “Over the past two decades, there have been bits of research about diabetes and pollution,” said Al-Aly. “We wanted to thread together the pieces for a broader, more solid understanding.”

The researchers also found that the overall risk of pollution-related diabetes tilted (倾斜) more toward lower-income countries such as India that lack the resources for environmental mitigation systems and clean-air policies. For instance, poverty-stricken countries facing a higher diabetes-pollution risk include Afghanistan, Papua New Guinea and Guyana, while richer countries such as France, Finland and Iceland experience a lower risk. The US experiences a medium risk of pollution-related diabetes.

9 . Earlier in the year we decided to build a garden in the heart of the village. We _______ a perfect plan showing our ideas. _______, we wondered how we could make it _______. As we didn’t have enough _______, a lot would depend on fundraising. But as it _______ out, what happened next was beyond our furthest expectation!

While we were _______, Butterfly Conservation in Scotland offered us enough wildflower seeds to _______ the whole area on our plan. The _______ was that we would have to so w the seed within a week, which _______ that the turf (草皮) would have to be ________ before the sowing!

So, I looked around to ________ a machine, but no neighbor had one. Someone ________ we hire one. I ________ to find a good one online but it cost ￡300. Not having the money, I wondered how we could get around this.

Last weekend, before we set out to plant our sunflowers, we received an unexpected________ ! As I spoke to a man living nearby, a lady approached me and ________ me £40! What a timely help. Seeing that, the man reached his ________ and handed me a donation too! I couldn’t ________ getting moved to tears and saying to them,   “Thank you.”.

All problems were ________ . We hired the machine on Thursday and set to lift the turf. I sent out a call online for Sunday ________. Finally 10 turned up, including a lady ________ of voluntary work. The soil was soon prepared and the seed sown.

We were just about to leave for the day, when my friend came with some daisies (雏菊).What a surprise! These daisies aren’t on our plan, but if the garden says that they’ll go well there, then who am I to argue?

10 . The fishermen of Senegal have joined forces to protect one of the ocean’s most endangered species — the sea turtle, a classic case of “poacher turned gamekeeper”.

The coastal waters of Senegal in West Africa are home to several species of sea turtles which are all beautiful creatures but are affected by pollution, poaching and even fishing nets.

“Once we were the biggest eaters of turtles, now we have become their biggest protectors,” said Abdou Karim Sall, a fisherman who led the Management Committee for the Marine Protected Are (MPA) of Joal-Fadiouth.

The Joal-Fadiouth MPA, covering about 174 square kilometers, was founded in 2004, and it’s backed by the government, local authorities and several associations. It is an area aimed at protecting marine ecosystem, habitats and species, including endangered species like the sea turtle. Its benefits are obvious: maintaining biodiversity, increasing fish catches on fishing grounds, as well as economic development.

For a long time, Sall has been working to raise local awareness of sea turtle protection. “Even former turtle sellers have been ‘changed’ by receiving three small boats to take tourists to sea,” he said. Instead of strict restrictions, the Joal-Fadiouth MPA has been trying to educate local communities about the economic benefits so that they would join the project. “It’s after they are told: ‘It’s an endangered species’,” Sall said.

Local residents have also set out to protect the nests. During summer and fall, a few dozen turtles may stop to lay eggs on the beaches of Joal-Fadiouth. MPA agents and village volunteers protest their nests with fences. “People come at 6 a. m. so that other animals do not take the young.” said Sall.

Sall added the number of turtles had decreased by about 30% in the past 20 years, and chances of survival of a young turtle were no higher than one in a thousand. But the fisherman-conservator agreed, “Awareness has not worked 100%.”