Giving equal time to scientists and to deniers is obviously wrong. And yet we keep giving the deniers a platform. I think we need to have a better informed press so that it can independently tell the difference between science and snake oil. We can't stop the internet echo chamber, but a better educated media would be a good first step.
Sadly, we as citizens are not willing to pay for news and commentary. So perhaps we deserve the world we are living in.
Step 1: find a media outlet that you feel does science well
Step 2: buy a subscription
Step 3: encourage others to do the same
Voting with dollars is probably a good way to start.