Tsk. Detail error during ST:SNW 'Memento Mori'. The ship's life support and many other systems are badly damaged, causing heat to rise in the relatively undamaged areas, like the bridge.

Spock... is sweating.

Very uncool.

The Mystery of Ethan Peck's Eyebrows.

He's half-human, isn't he?

Stereo Nacht : Yes indeed, but he has more Vulcan physiology because of the medical/genetic manipulation they had to do to enable his birth in the first place - green (cuprous) blood instead of red (ferric) blood, for example. Vulcan is very hot and mostly dry, so he shouldn't have been even bothered by the temperature.