Do you still call it winter?

Very cold this morning. But come to think about it, it is December now. We may have to say this winter has been weirdly warm. 6 degree Celsius this morning is not cold enough, still not my definition of winter. We are so much used to warm winters.
Two days ago, I heard a mosquito buzz when I was in bed. In a subway train you can see mosquitoes all year round. "Mosquito" is no longer a season word for summer when you make Haiku.
Some scientists are warning that Tokyo is becoming like a tropical climate place allowing tropical mosquitoes to inhabit, which might bring with them a tropical disease such as malaria that killed a million people in the world in 2006. This is, by the way, an amazing number. How indifferent we are to tragedies happening in the world as long as it doesn't occur in this country, is even more amazing. Anyway, perhaps it is no joking that it's a question of when, not if, that a first malaria patient will be reported in Japan.
Warm winter is comfortable but summer is becoming uncomfortable by just that much. I am not sure which is better but any change in the climate caused for human reasons seems no good in the long run. Where are we going? We do not know. We are always walking a frontier beyond which anything can happen that is impossible to tell from our empirical knowledge. All we can do may be at best to try our best to make the best of our knowledge... So... good luck....