Don't forget...we have more accurate and sensitive detection devices then we did 30 years ago and longer...We can detect things we never could before...therefore allowing astronomical increases in our ability to scare our-selves silly!
That may be true, but many of the differences seen across the solar system have little to do with greater accuracy and are based on differences in data and observations from instruments that have undergone little or no substantial changes in decades.
My point was that it is not the earth and our "man made" causes that is creating "global warming". Our very sun and its solar system are going through a cyclical change, and this cycle, this energy cycle is reflected in changes seen from the sun and all the way out to Pluto.