'Is it taiga?'
'Is it taiga and tundra?'
Husband looked at me. I'd just woken up and this was my first thought of the day. 'I have no idea,' he said. 'I'm not even really sure what tundra is.'
'Well, you hear more about the tundra, but I'm sure there's a taiga as well.'
'There, there. Drink your tea, dear. You'll feel better soon.'
I just googled taiga: it's an evergreen forest band in north Eurasia, just below the tundra.
You see: subconsciously I am a genius. If only my genius were consciously. And more relevant to ... well, anything.
P.S. My next question was: And pi r squared gives you the area, doesn't it?