Zane Davis at Terry has a image collage of clouds.....
see http://www.terry.ubc.ca/index.php/2006/03/04/evaporation/ ...

Do You Remember?
The sky was once filled with cloud, sometimes the cloud was so thick the sky was black.

Now day after day clear skies dominate.

You can feel the temperature difference between a clear sky day and a cloudy day.

On a clear sky day you can feel the sunshine burning your skin, making you feel uncomfortable and driving you into shade. And yet the air temperature in the shade seems so cold and uninviting.

In the past on a cloudy day the occasional break in the clouds allowed sunshine to fall on your skin, but then it was so comfortable and comforting. You could sun-bake and feel good.

At night clear skies allow atmospheric heat to rapidly escape to space, so the nights become a deep freeze.

In the day clear skies bake the ground along with all life forms.

So the days become hot and the nights freezing.

Man what have you done?