Even with the best will1 in the world,reducing our carbon emissions is not going to prevent global warming.It has become clear that even if we take the most strong measures to control emissions,the uncertainties in our climate models still leaye open the possibility of extreme warming and rises in sea level.At the same time,resistance by governments and special interest groups makes it quite possible that the actions suggested by climate scientists might not be implemented soon enough. Basically the idea is to apply sunscreen to the whole planet.One astronomer has come up with a radical plan to cool Earth;launch trillions of feather-light discs into space,where they would form a vast cloud that would block the suns rays.Its controversial,but recent studies suggest there are ways to deflect just enough of the sunlight reaching the Earths surface to counteract the warming produced by the greenhouse effect.Global climate models show that blocking just 1.8 per cent of the incident energy in the suns rays would cancel out the warming effects produced by a doubling of greenhouse gases in the atmosphere. That could be crucial,because even the most severe emissions-control measures being proposed would leave us with a doubling of carbon dioxide by the end of this century,and that would last for at least a century more.
国际英语资讯:Greece hit by first major strike in post bailout era
国际英语资讯:Protest in Sri Lanka calls on president to open parliament
国际英语资讯:Chinese envoy urges intl support for G5 Sahel force
国际英语资讯:UN chief appoints new commander for UN peacekeeping in Cyprus
国际英语资讯:New Maldivian president sworn in
国际英语资讯:Tension in eastern Gaza against Israel continues despite deal to avoid violence
国际英语资讯:Macron admits failure, but sticks to contested reforms
国际英语资讯:Turkey starts development of long-range air defense system: Erdogan
国际英语资讯:UN envoy not objects to replacing Presidential Council: Libyan parliament speaker
国际英语资讯:Latvian president orders lawmakers to improve overtime pay regulation
国际英语资讯:Trump says not sure if he will meet Putin in Paris
国际英语资讯:Egypts Sisi mourns monastery victims, vows to continue anti-terror war
国际英语资讯:Israeli geopolitical instability behind Lebanese financial crisis: economist
国际英语资讯:Spotlight: U.S. Marine veteran kills 12 in California bar shooting rampage
国际英语资讯:NATO says Russian missile test not to change its massive exercise plans
国际英语资讯:Death toll in northern California wildfire climbs to 48
体坛英语资讯:Italys Masnada tops ninth stage of 2018 Tour of Hainan
国际英语资讯:New York City tightens Halloween security one year after deadly truck attack
体坛英语资讯:Kenyas Teimet hopes for victory on return to Hangzhou marathon
国际英语资讯:Former S. African president Zuma ordered to pay legal fees
国际英语资讯:U.S. imposes new sanctions against Russia
国际英语资讯:Macrons approval rating continues to tumble despite govt reshuffle
国际英语资讯:Kenyas participation at Chinas 1st import expo to boost trade: envoy
国际英语资讯:Black box signal of Indonesias crashed plane detected, items belonging to victims found at
国际英语资讯:1 killed, 4 injured in blast in NW Pakistan
国际英语资讯:Spotlight: Tokyo police gear up for another raucous Halloween party in bustling Shibuya
国际英语资讯:Macron, May commemorate soldiers killed in Battle of Somme during WWI
国际英语资讯:Sri Lankan parliament passes no-confidence motion against new govt
国际英语资讯:Critical 24-hours for UK PM as her Brexit deal faces stormy reception
国际英语资讯:Brexit threat to Britains latest budget: expert
| 不限 |
| 英语教案 |
| 英语课件 |
| 英语试题 |
| 不限 |
| 不限 |
| 上册 |
| 下册 |
| 不限 |