4 . A Plastic Ocean is a film to make you think. Think, and then act. We need to take action on our dependence on plastic. We’ve been producing plastic in huge quantities. Drinking bottles, shopping bags and even clothes are made with plastic.     1     What happens to all the rest? This is the question the film A Plastic Ocean answers.

The film begins as a journey to film the largest animal on the planet, the blue whale. But during the journey the filmmakers make the shocking discovery of a huge, thick layer of plastic floating in the Indian Ocean.     2     In total, they visited 20 locations around the world during the four years to make the film.

In the film there are beautiful shots of the seas and marine life.     3     We see how marine species are being killed by all the plastic we are throwing in the ocean. The message about our use of plastic is painfully obvious.

    4     In the second half, the filmmakers look at what we can do to deal with the problem. They present short-term and long-term solutions. These include avoiding plastic containers and recycle as much as you can. The filmmakers also stress the need for governments to work more on recycling programmes.

We make a shocking amount of plastic. Over 300 million tons of plastic are produced every year, and at least 8 million of those are thrown into the oceans. The results are very harmful, but it isn’t too late to change.     5    

5 . Climate change leads to a threat to the world’s sandy beaches, and as many as half of them could disappear by 2100, a new study has found. Even by 2050 some coastlines could be unrecognizable from what we see today, with 10% to 12% facing severe erosion (侵蚀).

Using updated sea level rise predictions, the researchers analyzed how beaches around the world would be in a future with higher seas and more damaging storms. They also considered natural processes like wave erosion, as well as human factors-like coastal building developments, all of which can affect a beach’s health. The study found that sea level rise is expected to outweigh these other factors, and that the more heat-trapping gases humans put into the atmosphere, the worse the influences on the world’s beaches are likely to be.

It’s hard to overstate just how important the world’s beaches are. They cover more than one third of the world’s coastlines, and protect coastal areas from storms. Beaches are also important economic engines, supporting relaxation, tourism and other activities. And in some areas, the beach is more than a vacation destination. In places like Australia, life near the coast revolves around the beach for much of the year.

Some of the world’s most popular beaches are already taking action. Places like Miami Beach are trucking in thousands of tons of sand to patch up (修复) badly eroded shorelines, while others have built sea walls and breakwaters in an attempt to hold precious sand in place. But the financial and environmental costs of these projects are huge, and scientists say rising seas and more powerful storms, supercharged by a warmer climate, will make this a losing battle.

However, the researchers did find that humans have some control over what happens to the world’s beaches. If the world’s governments are able to stick to modest cuts to heat-trapping gas pollution, the researchers found that 22%of projected beach losses by 2050 could be prevented, a number that grows to 40%by 2100 if greenhouse gases are limited.

6 . Working at an investment bank in New York City in the mid-2010s. Anna Sacks was living the life—just not the life she wanted. Sure, she was happy. But she wanted to do something that felt important and was fulfilling on a deeper level.

Sacks packed up her life and moved to Connecticut for three months to participate in Adamah, a Jewish farming program that focuses on sustainable living and growing sustainable food. The Adamah program opened Sacks’s eyes to the damage consumer culture is doing on a local, national, and global level, and the need to find solutions. From then on, she began what she calls “trash (垃圾) walking.”

While walking around her neighborhood, Sacks, 31, picked through rubbish to look for reusable items. Soon, her trash walks expanded to include company rubbish along with residential trash. Surprisingly, she discovered a wide range of really great stuff—like clothing, dinnerware, and food—all of which she documents on Instagram and TikTok.

Under the name The Trash Walker, Sacks quickly gained popularity for her educational, funny, and surprising videos that highlight the problems with consumerism and share information about how to live a more sustainable life. “The root issue is overproduction, which leads to overconsumption, which leads to a large amount of waste,” she says. Sacks’s videos have gone viral many times, causing shockwaves through the industries she calls out.

Trash walking has given Sacks a nearly endless supply and she shares much of her “treasure” with others. She tries giving them informally to family, friends, or individuals she knows may need a specific item. Then she takes the remaining items to free stores so other New Yorkers can benefit from her treasure-hunting.

Sacks’s main focus is simply getting people to pay attention to how many unnecessary things they buy and then throw away. “Once you become aware of the way you consume, you can see ways you improve,” she says.

8 . The Antarctic’s snow-white environment is going green and facing other unexpected threats.

Scientists say that as temperatures go up in the polar areas, invading(侵袭)plants and insects, including the flies, cause a major threat.

More and more of these invaders, in the form of larvae(幼虫)or seeds, are surviving in coastal areas around the South Pole, where the temperature has risen by almost 3℃ over the past five decades. Glaciers have melted, exposing more land which has been occupied by mosses that have been found to be growing more quickly and thickly than ever before—providing potential green homes for invaders.

“The common houseflies are a perfect example of the problem the Antarctic now faces from invading species,” said Dominic Hodgson of the British Antarctic Survey. “They arrive by ship, where they exist in kitchens. They now have an increasing chance of surviving in the Antarctic as it warms up, and that is a worry. Insects like the houseflies carry bacteria that could have a deadly effect on native life forms.”

The Antarctic has several native species of insects. Together with its native mosses, these are now under increased threat from three major sources: visiting scientists, increasing number of tourists and global warming. However, it is global warming that is the main driver of the “greening” of the Antarctic.

In the 2015-2016 travel season, more than 38,000 tourists visited the Antarctic. “These tourists are often very careful about not leaving waste. But they could carry seeds or larvae on their boots when they set foot on the Antarctic,” said Dominic.

More and more invading insects and plants have been found on the Antarctic and have required removal. “The insects and plants that are native to the Antarctic have survived there for thousands of years,” said Dominic. “We have to act now if we want to save the environment.”

9 . Killer whales, or orcas, are known for their severe attacks on sea animals but they have never posed a threat to humans. However, since late July, the normally social animals have been intentionally attacking sailboats off the coasts of Spain and Portugal.

The strange behavior first surfaced on July 29, 2020, when a 46-foot boat was repeatedly attacked for almost an hour by nine orcas, causing the boat to rotate(旋转) 180 degrees and having its engine switched off. Since then, over 30 more similar incidents have been reported. On September 23, 2020, Spain's government banned boats of less than 50 feet in length from sailing in the 60-mile stretch of the Atlantic coastline between Ferrol and the Estaca de Bares Cape, where the attacks have been occurring.

Researchers across the world are trying to explain the orcas' behavior. Some believe it could be a result of the overfishing of the bluefish tuna - the orcas' primary food source -which has left the area's killer whales starving and unable to feed their babies. "I saw them look at boats carrying fish. I think they know humans are somehow related to food shortages, "says Ken Balcomb, senior scientist at the Center for Whale Research in Washington, USA. The environmentalists believe the sudden increase in boat traffic and fishing activities, after months of absence due to restrictions on human activity last spring, could also be contributing to the agitation.

However, Alfredo López, a biology professor in Galicia, Spain, thinks the attacks are defensive measures the orcas adopted to protect themselves against boat injuries. The researcher came to this conclusion after looking at the of the videos of a few incidents and noticing that two of the young killer whales involved had serious injuries. Hopefully, the experts will be able to find a way to restore the harmony between the animals and the humans soon.

10 . “Birds” and “airports” are two words that, paired together，don’t normally paint the most harmonious picture. So it really raises some eyebrows when China announces plans to build an airport that is for birds.

Described as the world’s first-ever bird airport, the proposed Lingang Bird Sanctuary(保护区）in the northern coastal city of Tianjin is, of course,not an actual airport. Rather，it's a wetland preserve specifically designed to accommodate hundreds-even thousands-of daily takeoffs and landings by birds traveling along the East Asian-Australian Flyway. Over 50 species of migratory (迁徙的）water birds，some endangered, will stop and feed at the protected sanctuary before continuing their long journey along the flyway.

Located on a former landfill site，the 150-acre airport is also open to human travelers.(Half a million visitors are expected annually.) However，instead of duty-free shopping，the main attraction for non-egg-laying creatures at Tianjin’s newest airport will be a green-roofed education and research center, a series of raised “observation platforms” and a network of scenic walking and cycling paths totaling over 4 miles.

“The proposed Bird Airport will be a globally significant sanctuary for endangered migratory bird species, while providing new green lungs for the city of Tianjin.” Adrian McGregor of an Australian landscape architecture firm explained of the design. Frequently blanketed in smog so thick that it has shut down real airports, Tianjin is a city---China’s fourth most populous----that would certainly benefit from a new pair of healthy green lungs•