This is the first definitive proof that things are changing, and climate change is likely responsible.
The Gulf Stream plays a significant role in maintaining the climate of the US East Coast and Western Europe. "We conclude with a high degree of confidence that Gulf Stream transport has indeed slowed by about 4% in the past 40 years."
The full study is Here
I welcome the decrease in temperature, but it would be great if it weren't connected to the earth being irreparably fucked. One winter at -40 (C or F) and people will start moving south and I might actually be able to afford to buy a house.