• Skeptics argue,however, that rising temperatures and warmer oceans are part of a natural cycle and are not convinced the changes are a result of man's pollution.

    VOA: standard.2009.05.03

  • Skeptics say global warming is part of a natural cycle of climate change.

    VOA: standard.2009.12.09

  • Irons is part of a team with the Illinois Natural History Survey.

    VOA: standard.2010.07.20

  • But the decision to hold most of the exercise in Kitgum has raised questions as to whether Natural Fire 10 is part of preparations for a renewed military effort against the Ugandan rebel group, the Lord's Resistance Army.

    VOA: standard.2009.10.20

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