Xenon-133 is a radioactive noble gas produced during nuclear fission that poses no concern at the detected level.

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The security firm known for using guns to hurt other people with guns and, allegedly, people without guns has gone from ominous murky wetland to colorless, odorless noble gas, Xenon, or Xe, as Blackwater will now call itself.

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In September 2012, its subsidiary, Unit Petroleum Company, acquired certain oil and natural gas assets from Noble Energy (NBL), increasing its proved reserves 38% from year-end 2011, and sold certain of its Bakken properties.

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However noble Mr Morales's aim of creating a fairer country, his handling of gas suggests he has chosen the wrong means to achieve it.

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Also working with Noble Energy, Cyprus lays claim to an estimated 60 trillion cubic feet of offshore gas reserves, which they hope will start flowing within the next few years.

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It's a noble effort, with 539 signatories to date, but it has no teeth: no firm deadline for offsetting greenhouse gas emissions and no penalty for not doing so.

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