This 2015 paper neatly condenses the most commonly identified skill sets necessary for effective science communication. Cultivating these twelve skills is a great goal for anyone interested in reaching out to the public. 

A few of the listed skills may seem superficially obvious (e.g., "Use language that is appropriate for your target audience"), but the true skill is the actual ability to eliminate jargon and sort through specifically what language is appropriate for a given audience. Other skills on the list are more challenging both on and below surface-- for example, "Consider the social, political, and cultural context of the scientific information." This skill asks us scientists to step outside our perspectives and understand another point of view, and it is key for reaching some communities.

It's a tough but important challenge. Happy reading!

Mercer-Mapstone Kuchel 2015_Core Skills for Effective Science Communication.pdf