Rhetoric
Rhetoric is the art of persuasion. Without any knowledge of it, we are mere pawns in a game played by those with influence. With it, we may be the influencers or we may be those who choose to resist.
Rhetoric Triangle (courtesy of Alma Llamas)
Science Argumentation
Here are two collections of popular science articles--written by professional writers who are interested in communicating scientific opinions and researches. These are excellent examples of arguing in the public forum.
The Assignment
Selections from The Best American Science Writing 2003
Selections from The Best American Science Writing 2005
A Letter from Mr. Isaac Newton (before he was an official 'sir')