Air Canada Centre's searchlights

[doady]

Actually, blocking out the sun might be good way to stop global warming.

 

[Mongo]

Space Sunshade Might be Feasible in Global Warming Emergency

For the past year, Angel has been looking at ways to cool the Earth in an emergency. He's been studying the practicality of deploying a space sunshade in a global warming crisis, a crisis where it becomes clear that Earth is unmistakably headed for disastrous climate change within a decade or two.

Angel is now publishing a first detailed, scholarly paper, "Feasibility of cooling the Earth with a cloud of small spacecraft near L1," in the Proceedings of the National Academy of Sciences. The plan would be to launch a constellation of trillions of small free-flying spacecraft a million miles above Earth into an orbit aligned with the sun, called the L-1 orbit.

The spacecraft would form a long, cylindrical cloud with a diameter about half that of Earth, and about 10 times longer. About 10 percent of the sunlight passing through the 60,000-mile length of the cloud, pointing lengthwise between the Earth and the sun, would be diverted away from our planet. The effect would be to uniformly reduce sunlight by about 2 percent over the entire planet, enough to balance the heating of a doubling of atmospheric carbon dioxide in Earth's atmosphere.

The pdf of the report:

Feasibility of cooling the Earth with a cloud of small spacecraft near L1

Bill

 

[Admiral Beez]

In fact, I love the search lights at the CNE coming from the National Trade Centre. The CN Tower should install one on the tip of the tower pointing straight up... that would be cool!

Reminds me of Soron.

 

[interchange42]

I wonder how forum members feel about the incessant and intrusive light beams splattering across the night sky each night. I might feel differently if they were drawing attention to some special event, like the Luminato Festival. But they're not. To me, they are as welcome as a neighbour's loud stereo.

Where are you living that these bother you? Or is it the principle: a waste of electricity, or diminished starts in the sky or something?

42

 

[doady]

Reminds me of Soron.

You mean Sauron, right? Actually in the movies, the approximate height of Barad-dur is 2000 ft which is pretty close to the height of the CN Tower.

Space Sunshade Might be Feasible in Global Warming Emergency





The pdf of the report:

Feasibility of cooling the Earth with a cloud of small spacecraft near L1

Bill

If that doesn't work, they could always drop a giant ice cube in the ocean, or push the Earth further away from the Sun!