she is an associate professor, simon fraser university.hey will both be here to answer your questions. if you have any questions on climate change, you can send them to us now. text 61124, email askthis@bbc.co.uk, or tweet using the hashtag #bbcaskthis. first, our science correspondent pallab ghosh reports on what's been described as a global wake up call for the planet. the ipcc has warned of two possible futures for our planet. in the two degree world, there is severe drought, there's more flooding in the northern hemisphere, people are poorer and have less food, and all the coral in our seas has gone. as things stand, that's the world we are heading towards, the scientists warn. one of the very clear messages of this report is that, inevitably, at the rate we're going, it's quite likely we are going to release too much carbon, burn more carbon than we can afford to burn if we are going to stabilise temperatures at 1.5 degrees, so we are going to have to work out how to get rid of carbon dioxide without just dumping it in the atmosphere.