Nobody cares about absolute zero; Celsius is centered around the freezing and boiling points of water. It freezes at zero and boils at 100. So yes, 50 is "halfway"
True. The worst heat I've ever felt was not here in Vegas at 115+. It was in Missouri. 100 degrees, 100% humidity, the radio said. I can personally confirm that the human body's cooling system does not work in those conditions.
Disagree. Once it gets over 108 or so it just doesn't matter anymore. I've done full days of work that ranged from 105 to 115 degrees over the course of the day and I honestly don't notice it much as long as there's water available. At that temperature your sweat evaporates before it can even be on your skin so at least it's a dry heat, lol
Being honest though, this spring has below average temperatures in Quebec. It's been pretty cold in March, April and May. So much that cutltures are quite late and some trees haven't bloomed yet.