Atmosphere

Sagebrush and Global Cooling

The image below shows a water strider. It uses the intermolecular bonds of water to hold itself up. If you look closely you can see the water bend beneath it, as if these creatures were walking on a film. They are: a film of energy.Meet the dry land water strider: big sagebrush.P2010108 The leaves of this aromatic plant are covered in tiny hairs.P2010101 These hairs trap the water which the leaves breathe out while they’re making sugar by eating photons from the sun.P2010096 They hold it in place by using those hairs in the way the water strider uses its legs. The result is a bond between the hairs of the big sage and the intermolecular bonds of the water.P2010095 This provides a high water atmosphere above the surface of the leaf, so it doesn’t lose water in the heat of the day, by augmenting the surface tension of the water — water’s own energy — to prevent the movement of water molecules across the barrier.P2010093

Just as water striders use the bonds of the water to hold themselves up in the air. This has been a summer of drought and fire. We would have gone a long way towards preventing it if we had adapted this technology and made membranes for our open water five years ago, or even this spring. It has the same effect as shade.

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In an atmosphere in which the loss of water, even from human skin, to the atmosphere creates heat, global cooling can start with the big sage.

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Sometimes walking on water means holding it still.

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