Corrected entry: Dr. Serizawa and Dr. Graham say 17 MUTOs (and counting) have been identified, but they show at least 18 (Russia, Germany, Sudan, Egypt, Morocco, Scotland, Japan, China, Cambodia, Australia, Skull Island, Bermuda, Brazil, Peru, Wyoming, Arizona, Stone Mountain [Georgia], and Isla de Mara) as Dr. Mark Russell thumbs through the map screens on the tablet. This doesn't include "Monster Zero" in Antarctica (making it 19, but they claim it was kept off the books on purpose a little later in the movie.) If they have at least 18 confirmed on the map, why not say 18 and counting, especially since they run Monarch, you'd think they'd know the accurate "updated" count as more MUTOs are found.
Corrected entry: When they are in Antarctica, people are just running around without hats or gloves, and we don't see their breath.
Correction: This is a common fallacy. You don't always see your breath just because it's cold. It also depends on humidity. If it's very dry, you won't see your breath.
Correction: Dr. Serizawa actually says "17 and counting 'after Godzilla'" which means that including Godzilla, there are 18 titans.
wizard_of_gore ★