To Kaori, I didn't know the relation to El Nino and Tofu!! I was surprised at this fact, because I haven't thought ever that El Nino relates to Tofu...and I was satisfied about it. It is interesting!!
Now, I am going to talk about aurora. It is very beautiful natural phenomena, isn't it?! We can see it in only much cold place for example Alaska, Canada and the northern of America and even if we go there in appropriate time, we can hardly see it. And the colder the temperature fall, the more beautiful we can see it!!
The incidence of aurora seems to relate to plasma, but no one has found out this mechanism. So it is mysterious effect!! I do wish to go to see aurora until the end of my life.
