New computer analysis hints volcanism killed the dinosaurs, not an asteroid (sciencenews.org)
Despite the efforts of the Alvarez father and son team, it seems that the evidence is not conclusive that an asteroid impact was responsible for killing off the dinos.
ETA: Recognizing that I know very little about the facts and specific science relevant to this issue, I've always wondered why the cause could not be both? It would seem that a "One-Two" punch could be exponentially more devastating than simply one or the other.
Despite the efforts of the Alvarez father and son team, it seems that the evidence is not conclusive that an asteroid impact was responsible for killing off the dinos.
ETA: Recognizing that I know very little about the facts and specific science relevant to this issue, I've always wondered why the cause could not be both? It would seem that a "One-Two" punch could be exponentially more devastating than simply one or the other.