A Media Matters report released this week found that broadcast news coverage of climate change has dropped significantly since 2009, despite a series of key developments in climate science and politics.

Last year, ABC, CBS, NBC and FOX spent a total of only 47 minutes discussing climate change. The same networks spent more than twice as much time covering Donald Trump's presidential ambitions and his fruitless investigation into President Obama's birth certificate.

The following chart demonstrates how one of the world's most pressing environmental and humanitarian challenges was drowned out by Trump's political sideshow in 2011:

For more on broadcast coverage of climate change, check out the full study here.