Climate change is a topic I am very interested in. Over the past few years, public interest in this topic has grown massively. But while there is alot of information available on the internet and in the scientific literature, much remains unknown about the way our planet's climate system works. As a result, many people remain skeptical that there is anything unusual going on, or that even if there is, that human activity is not playing a significant role in altering the Earth's climate. My opinion is that the evidence does point fairly conclusively to human activity playing a significant role in affecting the Earth's climate, but that we currently don't know enough about what the future effects might be. The graph shown above is an up to date measurement of global surface temperature, taken from NASA's climate change website. As well as this, other 'key indicators' are presented that show that climate change is indeed happening, although some uncertainty remains as to what the causes are, and what the effects might be.
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