A rare hole has opened up in the ozone layer above the Arctic, in 【小题1】 scientists say is the result of unusually low temperatures in the atmosphere above the north pole.

The hole has reached record dimensions, but is not expected to pose any danger to humans 【小题2】 it moves further south. 【小题3】 it extends further south to overpopulated areas, such as southern Greenland, people will be at increased risk of sunburn. However, on current trends the hole is expected to disappear altogether in a few weeks.

Low temperatures in the northern polar regions led to an unusual stable polar vortex (极地漩涡), and the presence of ozone-destroying chemicals such as chlorine (氯) in the atmosphere - from human activities-caused the hole 【小题4】 (form) .

It is now too early to say 【小题5】 the unusually stable Arctic polar vortex conditions are linked with the climate crisis, or part of normal stratospheric weather variability. Peuch said there were no direct implications for the climate crisis. Temperatures in the region are already increasing, 【小题6】 (slow) the destruction of ozone.

【小题7】 a hole over the Arctic is a rare event, the much larger hole in the ozone layer over the Antarctic has been a major cause for concern for more than four decades. The production of ozone-destroying chemicals 【小题8】 (reduce) dramatically, under the 1987 Montreal Protocol (蒙特利尔协议) , but some sources appear still to be functioning.

New sources of ozone-destroying chemicals were not a factor in the hole 【小题9】 (observe) in the Arctic, said Peuch. “However, this is a reminder that one should not take the Montreal Protocol measures for granted, and that observations from the ground and from satellites are central to avoiding a situation 【小题10】 the ozone-destroying chemical level in the stratosphere could increase again.”

Starbucks will eliminate plastic【小题1】(straw) from its stores worldwide in 2021 to reduce pollution【小题2】(cause) by plastic, the company says. The coffee retailer (零售商) will gradually reduce using single-use straws【小题3】its more than 28, 000 locations, cutting out【小题4】estimated 1 billion straws each year. Customers will instead be given plastic lids designed for use without a straw or with non-plastic straws. “Not using a straw is the 【小题5】(effective) thing we have ever done for the environment,” said Colleen Chapman, vice-president of Starbucks’ global social impact, in a statement. The announcement came just one week after Seattle, Washington — home to Starbucks’ headquarters — became the first major US city【小题6】(ban) single-use plastic straws in bars and restaurants.

Starbucks’ pushback against plastic has drawn a mixed【小题7】(react). M. Sanjayan, CEO of Conservation International, issued a statement saying “500m plastic straws【小题8】(throw) away every day in the US” and praised Starbucks for its “meaningful action to protect our oceans” . But many consumers【小题9】(voice) concern for disabled people. “What about those【小题10】rely on straws due to disability? I often can’t drink or eat without them.” a customer tweeted.

More and more children are suffering from eco-anxiety, which is 【小题1】problem that causes people to worry a lot about the future of Earth and the life on it. They worry about climate change,【小题2】(pollute) and the loss of biodiversity. This has urged education experts 【小题3】(call) for more teaching in schools about climate change, wildlife and the environment. So necessary is knowledge of them nowadays 【小题4】experts believe it should be taught to all year groups.

The Teach the Future campaign finds that only one in four schoolchildren【小题5】(feel) they know enough about the climate crisis. It says this is leading to move children【小题6】 (struggle) with eco-anxiety and worrying about the planet. A conservation organization, Earth Rangers,【小题7】(take) action to address the problem of eco-anxiety since it noticed that.

It says, Eco-anxiety does have a big effect【小题8】children in many ways. This includes feelings of fear and hopelessness. It is【小题9】(importance) to research and understand the ways in which we can help children deal with these feelings 【小题10】(effective). In the meanwhile, schools should create conservation activities and help children teach their parents how to protect nature.