Low-level clouds are thought to matter more than high-level ones because they are more prevalent and because they are better at reflecting solar heat away from the Earth than they are at trapping it, blanket-like, as high clouds do.

ECONOMIST: Climatology: Grey-sky thinking | The

There were cheers and claps as the shuttle climbed high into the clouds, engines burning with violent intensity.

BBC: NEWS | Science/Nature | Shuttle soars but doubts remain

Everything austere and northerly, black-and-white under the high dome of clouds.

NEWYORKER: Amundsen

Looking out the window, high above the clouds.

CNN: Cell phones on planes? For texting, not gabbing

Dr Solomon discovered that chemical reactions destroy ozone on surfaces such as the ice crystals within high-altitude 'polar stratospheric clouds' as well as on other atmospheric particles high in the atmosphere.

BBC: News | Sci/Tech | Ozone hole reaches record size

Trapped on three sides by high mountains, this warm, moist air forms huge clouds that then discharge electricity in powerful cloud-to-cloud storms.

BBC: In Venezuela, nature��s most electrifying lightning show

The clouds seem to chase after each other with the high speed of characters you see in old silent movies.

BBC: Meet this month��s BBC Travel Photo Nomad

If we peer through the clouds of government intervention, massive hedge fund bets, high taxes, lackluster consumer confidence, political uncertainty, and various other market distortions, we should be able to see the true market at work.

FORBES: Market Madness, Rampant Irrationality, & Animal Spirits: What Are Investors To Do?