There are over 30,000 different bugs in Texas, making it one of the most biologically diverse regions in the United States. Some of the most common types found in Texas are mosquitoes, ants, termites, cockroaches, beetles, and flies.
This could be some sort of viral ad campaign. Either that, or it's proof the world WILL end this year. It's a bunch of "clips" from all over the world -- videos of people who hear the same strange noises.