There are very many websites with opinions on climate change.
Where is there something we can trust?
Let's see what long-established scientific organisations tell us.
The Royal Society has been the home of science in the UK since the 1660s, and Sir Isaac Newton was a President of the Royal Society in its early days.
Coat of Arms of the Royal Society
What do they say now about climate change?
Scientists know that recent climate change is largely caused by human activities from an understanding of basic physics, comparing observations with models, and fingerprinting the detailed patterns of climate change caused by different human and natural influences.
The speed of the current climate change is faster than most of the past events, making it more difficult for human societies and the natural world to adapt.
Climate Change: Evidence and Causes
Which was put together by the Royal Society and the National Academy of Sciences, their equivalent in the USA.
Another important organisation offering something important is the Geological Society of London.
The Geological Society of London say -
This rate of increase of CO2 is unprecedented, even in comparison with the massive injection of carbon into the atmosphere 55 million years ago that led to the major PETM warming event, and is likely to lead to a similar rise in both temperature and sea level.
Climate Change: Evidence from the Geological Record