Climate Change FAQs
How do we know for sure that the climate is changing?
There is no doubt that we are not only experiencing a cyclical change in climate patterns but the actual climate change. Evidence of climate change are discussed in the article Climate Change – The Basics. We will therefore only briefly recall some of the main indicators of climate change – constant rise of average global temperature since the early 20th century, melting of the glaciers, sea level rise, loss of Arctic sea ice and measurements of carbon dioxide levels from the ice cores. The latter reveal that the levels of carbon dioxide in the atmosphere are the highest in the last 800,000 years.
Climate change is not a new phenomenon and has happened before. So could the current climate change be a natural event?
No. Evidence that human activities are the main cause of the current climate change is too strong. Carbon dioxide levels in the atmosphere are higher than at any time during the last 800,000 years, while early indicators of climate change coincide with the increased use of fossil fuel burning and rapid rise of the rate of deforestation.
What can we expect in the future?
It is hard to predict what will happen but we will probably witness further rise of the global sea level, disappearance of the glaciers and more frequent extreme weather events. But we will probably also witness a devastating effect on the ecosystems and possibly even mass species extinction.
Why the world’s leaders are not doing anything about climate change if we know that it is already happening and if we know that it can lead to a catastrophe of an unprecedented scale?
Although they may not seem to be particularly concerned about climate change, the world’s leaders are not as inactive as many people think. For example, the UK’s Government is taking climate change very seriously and working hard on cutting the country’s carbon emissions. A comparison of carbon emissions since 1990 to the present-day reveals that the Government is doing an excellent job. Despite the steady economic and population growths, the UK’s carbon emissions fell for one quarter since 1990.
Can climate change be reversed?
There are concerns that it may already be too late to reverse climate change but we must try to at least slow it down. Everyone can and should actively contribute to cutting carbon emissions because we do not really know what awaits us if the current trend will continue.