Last week we had a very informative class about climate change by Prof. Isaacs in the course "Opportunity Recognition".
We learned about the causes and effects of climate change and could ask every question we had.
I for example didn't know that the sea level is not mainly rising because glaciers are melting, but it is because a higher temperature implies that the molecules are expanding - and therefore sea levels are rising. (but of course melting glaciers play a role too)
We also got to look at some graphs like this one:
Looking back thousands of years, we can see that the earth indeed had some periods where the carbon dioxide level was relatively high, which eventually resulted in higher temperatures. But never in our history have we seen such an increase in carbon dioxide. As temperatures are rising after the carbon dioxide level has risen, we today don't know how extreme the temperature changes will be in the nearer future. The only thing we know is that it is going to be much warmer and we have to act to prevent further damage to our planet.
There are many things we can do e.g. eat less meat, take public transport, or reduce the use of energy in different ways. We don't all have to change our whole lives to contribute to a better world, changing small habits can have a great impact as well.
If you want to read more, Nasa usually provides very interesting insights and reports:
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