Conversely, if no one he saw seemed to have trouble with influenza, he might buy more yellow or green (sporadic activity) shares for each of the next few weeks.

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More importantly, a successful voluntary carbon market moves green low carbon economic activity into the free market domain, rather than the mandatory one we currently find ourselves in.

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The system then tracks factors dynamically and notifies users when the risk profile of an activity or asset slips from green to red, for example.

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By the same token, the yearning for government spending on "infrastructure" to stimulate economic activity creates an opening for the new president to push the kind of green projects that fit his call for a transition to alternative energy sources, including new kinds of mass-transit systems.

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Above it, there's a muscular maelstrom of activity in which four men lift from the cross the body of Jesus, which is already turning green in death.

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It expects a gradual increase in UK housebuilding activity from 2014 onwards as government schemes come online, and that demand will pick up when the Green Deal initiative became fully operational.

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