1) The CO2 station in Hawaii is downwind from a volcano that has become active (again) in the last few years.
2) The deaths in Europe because of the heat were due to electricity grid brownouts and blackouts that could not support the air conditioners. It was a lousy power grid that was the problem.
Exactly, the "scientists" didn't think anyone would remember that pesky fact. They make it sound like folks were just walking around when they suddenly keeled over and succumbed to "carbon poisoning." LOL!