字幕列表 影片播放 列印英文字幕 Well, let's talk about climate change. Now, people think, "Hey, aren't we getting the solar panels and windmills to be a lot less expensive? And isn't that helping reduce greenhouse gases?” And the answer is, absolutely. But, there's a lot more to do than just taking electricity to zero emissions. There's a variety of things that generate greenhouse gases. We have a lot of sectors of the economy, like manufacturing, that are emitting greenhouse gases that aren't talked about as much. Manufacturing. Everything we make even a cute little squishy like this, that's emitting 21% of the greenhouse gases. The number of buildings in the world is going to double by 2060. It's like we're going to build a new New York City every month for the next 40 years. It's a gigantic amount of materials. Steel, cement, wood, all emitting greenhouse gases. We're going to have to figure out how to make all these things in a different way. And so, we're going to need a lot of change, a lot of innovation, to bring the emissions from all those areas down to zero.
B1 中級 美國腔 氣候變化的重大挑戰 (The grand challenges of climate change) 362 11 April Lu 發佈於 2021 年 01 月 14 日 更多分享 分享 收藏 回報 影片單字