Home > Lifestyle > EnviroHealth > News Updated 11 June 2013 How stable is the Earth system? Researchers have proposed an answer to the debate as to how stable the Earth system is. 2 Pin It iStock Related Earth is warmer today, say scientists Scientists say humans are causing global climate change Environmental change triggers rapid evolution Start A Health24 blog » Follow Health24 on Facebook » Test Are you envirohealth savvy? » Ask EnviroHealth Expert » Sirens of the Lambs Bugs in your bed Researchers at the University of Southampton have proposed an answer to the long-running debate as to how stable the Earth system is.The Earth, with its core-driven magnetic field, oceans of liquid water, dynamic climate and abundant life is arguably the most complex system in the known Universe. Life arose on Earth over three and a half billion years ago and it would appear that despite planetary scale calamities such as the impacts of massive meteorites, runaway climate change and increases in brightness of the Sun, it has continued to grow, reproduce and evolve ever since.Has life on Earth simply been lucky in withstanding these events or are there any self-stabilising processes operating in the Earth system that would reduce the severity of such perturbations? If such planetary processes exist, to what extent are they the result of the actions of life? Forty years ago, James Lovelock formulated his Gaia Hypothesis in which life controls aspects of the planet and in doing so maintains conditions that are suitable for widespread life despite shocks and perturbations. This hypothesis was and remains controversial in part because there is no understood mechanism by which such a planetary self-stabilising system could emerge.A system that stabilises environmental conditionsIn research published in PLOS Computational Biology, University of Southampton lecturer Dr James Dyke and PhD student Iain Weaver detail a mechanism that shows how when life is both affected by and alters environmental conditions, then what emerges is a control system that stabilises environmental conditions. This control system was first described around the middle of the 20th Century during the development of the cybernetics movement and has until now been largely neglected. Their findings are in principle applicable to a wide range of real world systems - from microbial mats to aquatic ecosystems up to and including the entire biosphere.Dr Dyke says: "As well as being a fascinating issue in its own right, we quite desperately need to understand what is currently happening to the Earth and in particular the impacts of our own behaviour. "Pretty much whatever we do, life on Earth will carry on, just as it did for the previous 3.5 billion years or so. It is only by discovering the mechanisms by which our living planet has evolved in the past can we hope to continue to be part of its future." EurekAlert More in Lifestyle Marginally more minority lecturers at medical schools More: EnviroHealthNews advertisement Get a quote Bestmed - offering you quality healthcare and freedom of choice Momentum - save up to 35% on healthcare Medihelp - quality, affordable medical scheme cover advertisement Read Health24’s Comments Policy Comment on this story 2 comments Add your comment Thank you, your comment has been submitted. Logout Comment 0 characters remaining Share on Facebook Logout Comment 0 characters remaining Share on Facebook Loading comments... Other news Lifestyle Good body image tied to happier relationship Medical 135 million will have dementia by 2050 Mental health Suicide Try While Young a 'Red Flag' for Lifelong Struggles, Study Finds News Triumph for traditional healers Medical Formula 1 noise can damage eardrums Parenting Parent work schedules affect relationships with kids From our sponsors Your retirement - a healthy mindset So many people, why so alone? You can still enjoy the sweet things in life Take the sugar test, it could save your life. Live healthier Stress » Childhood stress PTSD and weight Managing work stress The symptoms of stress Take a look at the symptoms of the acute fight-or-flight stress reaction and the effect of long-term, unmanaged stress. Men's health » Exercise and sperm Best sperm season Smoking and sperm How to boost the health of your sperm You’d think that with millions of babies being born each day, the average sperm is a pretty healthy swimmer. Not so. Here are a few things you can do to boost the health of yours.