41.   Among the most popular theories are that Colosio was killed as a result of power struggles within the PRI, or that the murder was linked to drug traffickers.

42.   Anthropologists long ago rejected the popular theory that the Anasazi, now called Puebloans, abandoned their irrigated corn fields without a trace.

43.   Another popular theory is that China is a classic bully who backs down when confronted.

44.   There are four popular theories that attempt to explain how the Earth acquired a moon.

45.   According to one popular theory, scrapie leapt the species barrier to cows, infecting cattle that ate the ground-up remains of sheep.

46.   The current popular theory has Melanesians and Polynesians being two separate races, with Polynesians arriving from Asia and leapfrogging over the already settled Melanesians.