[KarlInOhio]

a hothouse where the average temperature was nearly twice that of today.

Twice on which scale? The global average temperature is 58.1°F, 14.5°C or about 288 K. Which do you double? Would it be 116.2°F (average, $(#(#*( that is hot), 29°C (pretty hot, maybe Alaska would be nice), or 576 K (lead would probably melt in the daytime and refreeze at night). Kelvin is the only one of those scales in which you can really talk about doubling the temperature because its zero point is absolute zero.

Press idiots.

[decimon]

Twice on which scale? The global average temperature is 58.1°F, 14.5°C or about 288 K. Which do you double? Would it be 116.2°F (average, $(#(#*( that is hot), 29°C (pretty hot, maybe Alaska would be nice), or 576 K (lead would probably melt in the daytime and refreeze at night). Kelvin is the only one of those scales in which you can really talk about doubling the temperature because its zero point is absolute zero.

Well, double is 100% hotter. How would you express temperatures 1% hotter than today's average? Are you saying that can't be expressed?