Dinosaur extinction: what they don’t want you to know

Like, the Larsonite hypothesis

During the last days of the Mesozoic, the dinosaurs took to smoking. This unfortunate activity led to a higher incidence of lung cancer and other diseases, and as such ended up wiping out the dinosaurs.
This hypothesis is much simpler than the others presented on this page, and thus more credible. Most research on it these days is carried out at the Midvale School for the Gifted.