We are going to talk about a type of pollution which many people have not even heard of.

我们将讨论一种许多人甚至都没有听说过的污染类型。

For sake of simplicity though, we're going to focus on one type of pollution: carbon dioxide emissions.

不过为了简单起见，我们将关注一种污染：二氧化碳排放。

Cutting back on the sources of all these types of pollution would mean avoiding more than a million premature deaths by 2050.

减少所有这些污染源，意味着到2050年可避免一百多万人过早死亡。

But plastic isn't even the only type of pollution to be worried about in the Arctic, though.

但塑料甚至不是北极唯一值得担心的污染类型。

The act of burning kerosene and other aviation fuels to power jet engines and propellers means carbon dioxide emissions, among other types of pollution.

燃烧航空煤油或其它航空燃料给喷气式发动机和螺旋桨功能，意味着会产生二氧化碳排放，还会产生其它污染。

But from March 23rd to April 13th of this year, it saw a 60 percent reduction in a certain type of pollution that it saw in the same period last year.

但在今年的3月23日到4月13日，与去年同期相比，该城市的某种污染减少了60％。

And the Scripps Institution of Oceanography did a study in 2021 that found wildfire smoke is 10 times more harmful to humans than other types of pollution, like car exhaust.

斯克里普斯海洋学研究所在 2021 年进行的一项研究发现，野火烟雾对人类的危害是汽车尾气等其他类型污染的 10 倍。

It's possible that animals at the bottom of the food chain could be eating them, and scientists say the biggest sources for this type of pollution included packing materials, nylon, paint and a fiber often found in cigarette filters.

有可能食物链底层的动物会吃掉它们，科学家说这种污染的最大来源包括包装材料，尼龙，油漆和纤维经常在香烟过滤器中发现。