Can't get the staff.
T'internet (and it's many wonders) means news budgets are cut - for newspapers, TV, radio. Editors look at what they produce, and strangely enough dedicated scientific journalists are expensive. They get sacked and general news journos report science-y stuff.
Understandably, if it's not your interest and you're not trained, you don't bother to dig too deep beyond the press report when there's a paedophile/sports/Royal family/political story (not that all those elements are in any story that I know...).