Big Chill On Hold: Global Warming Delays Ice Age

The next Ice Age may be a more distant prospect than scientists had thought, due to the effects of carbon dioxide emissions on global warming. The Earth has been in its current interglacial period for over 11,000 years. Although it was estimated that a new Ice Age could begin around 1500 years from now, recent reports suggest that it could actually be anything from 50,000 to 500,000 years before huge glaciers take shape on the globe again.

Whilst some people see the delayed Ice Age as a positive thing, many are pointing out that this is a clear sign of how human activity is impacting on the planet. Changes in carbon dioxide levels mean the Earth is unlikely to be cool enough for ice sheets to form within the next millennium, as CO2 effectively insulates the globe. Indeed, sea levels have risen significantly in recent years due to high temperatures causing the break up of huge ice plateaus in the arctic regions.

The Earth has experienced at least five ice ages and close scientific examination of the planet’s orbit and of rock samples suggests that the concentration of CO2 had to be around 240ppm (parts per million) in order for this to occur. However, levels are currently around 380ppm and even if all emissions were to be halted today, it would be many decades before the atmosphere was clear of carbon dioxide.

A delayed ice age is by no means the only worrying result of global warming. Increasingly extreme weather conditions have also been attributed to the world becoming warmer. Scientists are always contemplating ways in which to stop so many greenhouse gasses being pumped into the atmosphere, but there is no doubt that a worldwide collaborative effort will be necessary for any tangible change to be felt.

One possibility for tackling carbon dioxide emissions could be wider use of CO2 scrubbing, which captures the gas before it enters the atmosphere through a complex filtering process. The plastic used for CO2 scrubbing is even recyclable, making it a hopeful prospect for green energy enthusiasts. In the meantime, we’re certainly not in immediate danger of experiencing an Ice Age, though whether this is a good or a bad thing for the Earth is open to interpretation.

Written by Jemma Saunders
Read Jemma’s blog or follow her on Twitter @JemSaunders1