While many people still dispute the issue of Global Warming, we can't help but notice that our environment is changing. Flash floods in the middle of summer and the depths of winter have devastated whole communities. The seasons appear to be merging, so that spring starts earlier and autumn lasts longer, yet the extremes also seem to be getting worse year in year out.

But what do you think? It's time to have your say:

• Have centuries of industrialisation and careless pollution caused a climate shift?

• Is this just a natural part of the life-cycle of the planet that we haven't predicted?

• Might it be due to changes in the sun or the Earth's orbit that scientists haven't identified yet?

Whatever your opinion, we invite you to share it with us in this week's Talking Point...