it really was the asteroid wot killed the dinosaurs!

[Furunculus]

I'm not an expert in biology or geology, but wasn't that theory already accepted by most scientists?

nah, there were multiple possible causes, and really they all had an effect, it was just a question of whether any one of them could be singled out as having a definitive 'impact' on the extinction event:
http://en.wikipedia.org/wiki/Cretace...tinction_event

Deccan Traps volcanism was truly staggering, involving the surface release of around two million CUBIC kilometres of flood basalt over the course of a million or so years:
http://en.wikipedia.org/wiki/Deccan_Traps

Not an unreasonable culprit given that the Siberian Traps event was strongly implicated in the Permo-Triassic extinction event 200 million years earlier:
http://en.wikipedia.org/wiki/Siberian_Traps

Also, ocean anoxia events were no tea-party either:
http://en.wikipedia.org/wiki/Anoxic_event