The opening of the Paris conference on climate change will be the occasion for the customary lamentations about the imminent demise of life on Earth if we do not pull up our socks as a species and reduce carbon emission levels, and thus avoid the toasting of the world. The adduced scientific evidence does not justify any such state of alarm. Every sane and informed person in the world is concerned about pollution and demands vigilance about any clear trends of climate change and any convincing evidence that human behaviour influences the climate.