Webquest - Climate Change

Start here to learn about Climate Change. Some of the links are dead. New ones will be posted in order to accomplish all tasks. Sorry.
We are back with new links to the tasks that replace the missing ones.
Click here to watch video number 1 on task 3. It's about scientists in Antarctica.
Video number 2, also about their work, is here.
 Task number 5 is no longer possible  to accomplish (as it has been designed) because the video about the Summit is gone. We will replace the source by this . More information here (What can we do?) and here (What is Europe doing?).
I hope this is an interesting challenge to you.