A lot of people in the past said that NASA was a waste of money...

A lot of people in the past said that NASA was a waste of money and how would going to the moon help the average American , especially when you have people living on the streets , could not that money be better spent.

Of course that is not true its just a bunch of rubbish exactly like the attacks on the NBN.

Good to see you think highly of NASA Ben

NASA provides great value for money in many areas and they have gathered much of the eveidence for AGW.

From the NASA website

"The Earth's climate has changed throughout history. Just in the last 650,000 years there have been seven cycles of glacial advance and retreat, with the abrupt end of the last ice age about 7,000 years ago marking the beginning of the modern climate era ? and of human civilization. Most of these climate changes are attributed to very small variations in Earth?s orbit that change the amount of solar energy our planet receives.


"Scientific evidence for warming of the climate system is unequivocal."
- Intergovernmental Panel on Climate Change

The current warming trend is of particular significance because most of it is very likely human-induced and proceeding at a rate that is unprecedented in the past 1,300 years.1

Earth-orbiting satellites and other technological advances have enabled scientists to see the big picture, collecting many different types of information about our planet and its climate on a global scale. Studying these climate data collected over many years reveal the signals of a changing climate.

Certain facts about Earth's climate are not in dispute:

The heat-trapping nature of carbon dioxide and other gases was demonstrated in the mid-19th century.2 Their ability to affect the transfer of infrared energy through the atmosphere is the scientific basis of many JPL-designed instruments, such as AIRS. Increased levels of greenhouse gases must cause the Earth to warm in response.
Ice cores drawn from Greenland, Antarctica, and tropical mountain glaciers show that the Earth?s climate responds to changes in solar output, in the Earth?s orbit, and in greenhouse gas levels. They also show that in the past, large changes in climate have happened very quickly, geologically-speaking: in tens of years, not in millions or even thousands.3
The evidence for rapid climate change is compelling"

http://climate.nasa.gov/evidence/