to dr corinne le quere, professor of climate change science and policy at the university of east anglia and director of the tyndall centre for climate change researchshe is also a member of the uk committee on climate change, an independent body set up to advise the uk government and devolved administrations on emissions targets. and we'll also be talking to dr kirsten zickland from vancouver, who is a lead author on chapter one of the report. she is an associate professor, simon fraser university. they 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 mes