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Population Matters » For a sustainable future

Population Matters » For a sustainable future

Finding seclusion in a world of 7 billion Updated Fri 4 Nov 2011, 6:08pm AEDT Escaping in a world of 7 billion people is becoming increasingly difficult, but in Australia - one of the least densely populated countries - seclusion still exists. The global population passed the 7 billion milestone this week and is expected to hit 9 billion by 2050. Hayman Island on the Great Barrier Reef is about eight kilometres in circumference, with a population of just a few hundred. Photographer Lisa Burns, 27, has lived there for the past two years. Here she paints a picture of what it's like in one of the Earth's few remaining pockets without people. I moved over with my partner. We live in a studio apartment, it's like a hotel room, we don't have a kitchen or anything like that but we've got a balcony which looks over the ocean and the reef. The island is quite small - it's about eight kilometres in circumference - so we can't go to many places but we go for bushwalks and sunset walks when it's low tide and things like that.

Scorecard Home the free encyclopedia 7 billion people and you: What's your number? Sources: All population data are based on estimates by the UN Population Division and all calculations provided by the UN Population Fund. The remaining data are from other sections of the UN, the Global Footprint Network and the International Telecommunications Union. Want to find out more? Notes on the data: Only birth dates after 1910 can be accommodated and only countries with populations of more than 100,000 people are included. Three country groupings - developed, developing and least developed - featured in the conclusions are those referenced by the UN for assessing the Millennium Development Goals. Read the answers to frequently asked questions here.

Blog » The Top 10 Plants for Removing Indoor Toxins Common indoor plants may provide a valuable weapon in the fight against rising levels of indoor air pollution. NASA scientists are finding them to be surprisingly useful in absorbing potentially harmful gases and cleaning the air inside homes, indoor public spaces and office buildings. The indoor pollutants that affect health are formaldehyde, Volatile Organic Compounds (benzene and trichloroethylene or TCE), airborne biological pollutants, carbon monoxide and nitrogen oxides, pesticides and disinfectants (phenols), and radon. These pollutants contribute to ‘sick building syndrome’, which causes symptoms ranging from allergies, headaches and fatigue through to nervous-system disorders, cancer and death. Through studies conducted by NASA, scientists have identified 50 houseplants that remove many of the pollutants and gases mentioned above. More information on this study as well as references and details on specific chemicals can be found on Dr. Dr. 1. Also called the “Butterfly Palm”.

7 challenges for 7 billion Updated Thu 3 Nov 2011, 9:36am AEDT This week the world's population ticked over to 7 billion. By 2050 that number is expected to grow to 9 billion. From water shortages to rising sea levels, experts from the University of New South Wales and the University of Melbourne paint a grim future for life on Earth. They forecast dramatic changes unless significant steps are taken to curb population growth. Here seven academics outline seven challenges they say a population of 7 billion must confront. Is it all doom and gloom as they suggest, or do we have a brighter future? Climate Australia is one of the most affluent and also the most effluent nations on Earth. What we're putting into the atmosphere really constitutes an unprecedented experiment with our planet that is going to lead to changes that haven't been seen in millions of years. Water Access to fresh water in Australia, the driest inhabited continent, is incredibly difficult. Energy Economy Ageing population Birth control Food security

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