- UID
- 1513435
- 在线时间
- 小时
- 注册时间
- 2022-2-7
- 最后登录
- 1970-1-1
- 主题
- 帖子
- 性别
- 保密
|
p1, cement: the most widely used after water, the most polluting, --material and process of making it--
5% of the world's emissions of greenhouse gases=2 aviation.
p2, EU already restricts emissions from it. others are likely to follow
the biggest firm joins CSI(realise voluntary emissions cuts)--in hope of heading off regulation.
demand grow 5% annually, evironmental headaches grow
P3, e.g. L, H, C, the 3 biggest firms cutting: L, H, a fifth in 2010,
C, a fourth in 2015
H, 2006 was 16% below 1990
p4, cuts from 3 areas: 1, k more efficient--reduce energy of output
2, replace fossils fuels with alternatives such as farm waste
3, mixing additives-- reduce emission-intensive
p5, all 3 have limits: 1, already for a century, little scope for gains
2, release noxious chemicals, + danger of incineration
3, limit the extent
p6, only marginal benefits, demand growing >emissions falling
e.g, H, emissions rise by 2/3 since 1990
L, cut in rich countires(demand sluggishly), expand in emerging market, buy O, a Egyptian firm
p7, in time, better developed--stronger+more flexsible,used sparingly,
B, boss of L: e.g. impossibly thin pedestrian bridge
energy-efficient, with smarter architecture+city planning
p8, David, Greenhouse: support such initiatives, but need substitute, various alternatives, but no such commercial success. (相同点不同点)
B, a week in lab, urging bottins.
head off 阻止
sparingly 少量地,节俭的
boffin, 研究员,科学工作者
|
|