Here in Okinawa,leaves of trees never turn red or yellow in Fall. Unlike other part of Japan,the weather is like Summer throughout the year.We could even wear T-shirts with no outer all the year round. So,we are always impressed with the red leaves we found on a trip to other place in Autumn. Nowadays, there found many signes of tropicalize in the sea around Japan mainland. To avoid Global warming,let's start something we can do for the earth.How about turn off the lamps in house? It could also avoid increasing electric charges.