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These are some of the issues raised in the United Nation Summit on Sustainable Development has listed among changes since 1987 that have impacted the environment: To read the full news go to the The Star .

Earth’s human population has grown by 34 per cent, from 5 billion to 6.7 billion. That has led to destruction or depletion of water, soil, forests, species and almost every one of the planet’s resources.

International trade has tripled. Its benefits are offset by its contribution to the spread of invasive species in the Great Lakes and almost every other water body.

The world’s average per capita income has risen by 40 per cent, but the gap between rich and poor continues to grow.

Air quality has improved in some places, most noticeably in the rich developed countries, but often because polluting industries have moved to poor nations. Although measures to control ozone-depleting substances are considered a success, the ozone hole continues to grow. And bad indoor or outdoor air is estimated to kill 2 million people each year.

Greenhouse gas emissions have risen by a third, leading to much higher concentrations in the atmosphere and the threat of catastrophic climate change.

The yield from an average hectare of cropland has increased to 2.5 tonnes, from 1.8 tonnes in 1987, but “unsustainable land use is causing degradation, a threat as serious as climate change.”

Intensive ocean fishing is devastating some species very quickly and, increasingly further down the food chain. Worse, the demand for fish is expected to increase by about 1.5 per cent a year.

By 2025, nearly 2 billion people will live in countries faced with absolute shortages of water.

What do you think is climate a done deal, is climate a big hoax, or what can we do to change it?

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