If you're an expert in your field and have good credentials (ex. a PhD), you might consider signing up for one of the many 'expert networks' that reporters use to find sources for stories like helpareporter.com or  expertisefinder.com.

These directories seem to be a common way for reporters to connect with domain experts to learn more about a topic area or, maybe more likely, find the right pull quotes to provide evidence for their existing thesis.

While it's unlikely to have a major impact, I expect it would be good to have more EA leaning experts interfacing with reporters could:

• Slightly shift the policy conversation in positive ways.
• Direct reporters to other high quality sources. "You should avoid all of the papers written by X, he has a grudge against Y, maybe instead talk to Z?"
• Help network with reporters and learn about the . 
• Benefit your career by giving your work more exposure. 

And the costs are very low, basically just the risk it becomes a major drain on your attention. 

I’d be interested in hearing from reporters at high quality orgs if these are useful or if there are better ways of getting connected with sources.