Um, bacterial infections that originate in the mouth cause death from heart failure is not a controversial premise.

As to the edit, what we mean by 'mouthwash' kind of matters. Like certain types of bacterial infection can be exacerbated by Listerine and the like, where cheap as dirt hydrogen peroxide or simple salt water can be beneficial.

Game reserves and eco tourism in general are exceptions. Not generally winning that battle though.

The image caption states that they are also studying the impact of invasive species in these biomes. Definitely the right choice in context, but yeah, looked dumb to me too.

Forget about accretion disks, that's a local phenomenon.You're right in the sense that galaxies exist because the Black hole at the center does not become massive enough to have all the matter. In the same sense that earth exists because of the sun because it the sun is not massive enough to have subsumed the earth. Also, nebulae are gas features within galaxies, but entire galaxies we're once called nebula before we realized they're just far away galaxies.

The Bear stands out to me because its the rare show that isn't directly aping some previous hit.