【推荐1】The good news is that more people bought electric cars in 2020. The bad news is that SUVs continued to grow in popularity, too. The fall in oil consumption due to the first trend was completely cancelled out by the second, say Laura Cozzi and Apostolos Petropoulos at the International Energy Agency (IEA) in France.

The growing popularity of SUVs is making it even harder to cut carbon dioxide emissions（排放）and meet climate goals. “Policy-makers need to find ways to persuade consumers to choose smaller and more efficient cars,” says Petropoulos.

Oil consumption by conventional cars – not including SUVs – is estimated to have fallen 10 percent in 2020, or by more than 1.8 million barrels（桶）a day, Cozzi and Petropoulos say in a commentary published by the IEA on 15 January. Most of this fall was due to reduced travel and is likely to be temporary.

But a small part of the drop, around 40,000 barrels a day, was as a result of the increased share of electric vehicles (EVs). “We have seen a skyrocketing of global electric car sales in 2020,” says Petropoulos. Unfortunately, the number of SUVs increased as well. While overall car sales fell in 2020, 42 percent of buyers chose SUVs, up around three percentage points from 2019.

Globally, there are now more than 280 million SUVs being driven, up from fewer than 50 million in 2010. On average, SUVs consume 20 percent more energy per kilometre than a medium-sized car.

The increase in SUVs in 2020 led to a rise in oil consumption that cancelled out the effect of electric cars, says Petropoulos. Much the same is true over the past decade. Between 2010 and 2020, global CO2 emissions from conventional cars fell by nearly 350 megatonnes, due to factors such as fuel efficiency improvements as well as the switch to electric cars. Emissions from SUVs rose by more than 500 megatonnes.

“While the growth in EVs is encouraging, the increase in SUVs is heart-breaking,” says Glen Peters at the CICERO climate research centre in Norway.

There are many reasons for the growing popularity of SUVs, says Petropoulos. Rising prosperity（繁荣）in many countries means more people are able to afford them, for instance. Some people see them as a symbol of social position. SUVs are also heavily advertised by car-makers, he says, whose profits are higher on these vehicles.

There are now some electric SUVs available. “Hopefully, in time, you will see electric vehicles entering the SUV market,” says Peters.

Even if it happens, switching to electric SUVs isn’t an ideal solution. Due to their size and bigger batteries, it takes more resources to build electric SUVs, and they consume around 15 percent more electricity. Higher electricity demand makes it harder to green the electricity supply.

【推荐1】If you wear contact lenses (隐形眼镜), you might not know the best way to deal with old ones. Washing them down the sink or flushing them down the toilet is not the way to go. Yet one in five people who wear contact lenses do just that. However, the plastic in their lenses can linger (存留), polluting both water and land.

Rolf Halden, an engineer at Arizona State University in Tempe, and his team created an online survey. More than 400 contact lens wearers took part. The questions asked how many got rid of their lenses inappropriately. About 20 percent — one in five — sent their used contact lenses down sink drain or toilet. Assuming all contact lens wearers in the U. S. do that at the same rate, the researchers then calculated how much plastic would be flushed away each year. Their estimate: 6 to 10 metric tons! That's about the weight of two to three adult African forest elephants. Contact lenses are a tiny part of the world's plastic pollution. But the unique plastic used in contact lenses could make them a big concern.

To figure it out, researchers exposed contact lenses to the microbes (微生物) used to clean wastewater in water-treatment plants. These microbes made the plastics begin to fall apart, but they weren't fully broken down. Instead, they created a lot of tiny pieces called microplastics.

Halden worries that these small plastic bits will cause trouble in the food chain. In water, the plastics from contact lenses sink. Animals could view these tiny bits as food. But because the plastic won't provide them with nutrition, this could threaten the health of animals who dined on it.

And that's already happening. Many studies have shown that corals, larval fish and shellfish are mistaking microplastics for food. Over time, they risk accumulating even higher levels of plastic in their bodies. Also the pollution has already shown up in bottled water, sea salt and fish sold for human consumption.

【推荐2】Information from this year’s IQAir World Air Quality Report showed only seven countries met the World Health Organization’s pollution recommendations in 2023, which were Australia, Estonia, Finland, Grenada, Iceland, Mauritius and New Zealand. Of the 134 countries and regions measured, 124 had higher levels than called for in the WHO pollution guidelines.

The report said the five countries with what it called the lowest air quality had particle (颗粒物) levels at least nine times higher than what the WHO recommends. Three South Asian countries — Bangladesh, Pakistan and India — had the world’s lowest air quality. In 2022, India was eighth and Bangladesh was fifth.

The information came from the Swiss company IQAir. The report used measurements from over 30,000 stations across 134 countries. IQAir used the WHO standard of PM 2.5 to measure the size of breathable pollutant particles in the air. The PM2.5 measurement means the particles are 2.5 microns (微米) or less in diameter (直径). The diameter of human hair, for example, is about 30 times larger than a particle of 2.5 microns.

In Bangladesh, the concentration of PM2.5 particles reached 79.9 micrograms per cubic meter in 2023. In Pakistan, the number was 73.7. India’s level was 54.4, Tajikistan in Central Asia was 49 and Burkina Faso in West Africa was the fifth-most polluted nation at 46.6.

Firoz Khan, an air pollution expert at North South University in Dhaka, Bangladesh, said 20 percent of the early deaths in the country were caused by air pollution. He added spending on pollution-related healthcare was equal to four to five percent of the nation’s economy.

Christi Chester Schroeder oversees air quality science for IQair. She said South Asia’s geography and climate conditions influence its air quality. “The pollution has nowhere to go,” she added. “Because of agricultural practices, industry and population density, it really does look like it is going to get worse before it gets better.”

【推荐3】Canada Is Our Neighbour

Canada and the United States are neighbours.They are on the same land.They share the same long boundary(国界).These two nations are similar in many ways.Canada buys many goods from the United States.Cars and clothes are two examples.The United States also buys goods from Canada.Much of the paper used in the United States comes from Canada.Some of the oil we use comes from Canada,too.

Americans travel to Canada on holiday.And Canadians often visit the United States.It is easy for the people of one country to go to the other country.

Canadians read about the United States in newspapers and magazines.Many Americans watch Canadian baseball and hockey (曲棍球)matches on Sundays.

However,there are important differences between the United States and Canada.The United States has more people.

Because the population is smaller,there are more open places in Canada.There is much unused land.This is another important difference.