Changes

<ref>Hansen's group at the Goddard Institute wrote, "Global warming is now 0.6&nbsp;°C [1.0&nbsp;°F] in the past three decades and 0.8&nbsp;°C [1.4&nbsp;°F]in the past century." http://data.giss.nasa.gov/gistemp/2005/</ref>

<ref>Hansen's group at the Goddard Institute wrote, "Global warming is now 0.6&nbsp;°C [1.0&nbsp;°F] in the past three decades and 0.8&nbsp;°C [1.4&nbsp;°F]in the past century." http://data.giss.nasa.gov/gistemp/2005/</ref>

Scientists such as [[Richard Lindzen]] of [[MIT]], [[Sallie Baliunas]] of [[Harvard]] and [[Fred Singer]] (independent) say that the patterns of global warming are naturally caused (see [[climate cycles]]).

Very few scientists (less than 5%) such as [[Richard Lindzen]] of [[MIT]], [[Sallie Baliunas]] of [[Harvard]] and [[Fred Singer]] (independent) say that the patterns of global warming are naturally caused (see [[climate cycles]]).

Assessments by the [[United Nations]] promote the world view that the warming since around 1850 is mostly human-caused.

Assessments by the [[United Nations]] promote the world view that the warming since around 1850 is mostly human-caused.