Global warming

Global warming is a typical example of an environmental problem.
And the rise in the sea level is caused by global warming.
Many countries, such as Tuvalu, will sink by this problem.
I think the rise in the sea level is started when antarctic ice melts away.
However, this is different.
The cause is the ice of land melting away and flowing into the sea.
I was surprised when I knew this thing and I felt that I don't know many thing.
I think that problemes are unsolvable unless we know essence.
So, I think we had better have Intellectual appetite.