07 | November | 2007 | Stephen Leahy, International Environmental Journalist

By Stephen Leahy* – IPS/IFEJ

In the past 15 years, all of Canada’s environmental indicators have suffered, say experts who distribute the blame among local and national governments, businesses and the public.

TORONTO, Nov 5 2007 (Tierramérica).

In the 1980s, Canada was a bright green engine of change, pushing the global community forward on sustainable development and global warming. But now it is falling behind in almost every environmental aspect.

The lead author of the landmark 1987 Bruntland Report, “Our Common Future“, was Canadian Jim MacNeill. The very first international climate change meeting involving scientists and political leaders was held in Toronto in 1988.

Canadian Maurice Strong organized the first World Conference on the Environment in Stockholm in 1972, was the first executive director of the United Nations Environment Program (UNEP), and was secretary-general of the 1992 Earth Summit in Rio de Janeiro.

But after this flourish on the world stage, Canada sat back and did virtually nothing domestically. The country ranks 28th out of 30 high-income countries in terms of environmental sustainability, according to an independent Canadian study. The Organization for Economic Cooperation and Development ranked Canada 27th in terms of environmental performance. Continue reading →

“I have no idea how this will affect oxygen levels but it is something we should be thinking about.” — Bradley Cardinale, biologist, University of California,

By Stephen Leahy

Credit:NASA

The Amazon River and rainforest viewed from space.

Nov 6 (IPS) – Plants are the only source of oxygen on Earth — the only source. Studies around the world show that as plant species become extinct, natural habitats can lose up to half of their living plant biomass.

Half of the oxygen they produced is lost. Half of the water, food and other ecological services they provide are lost.

If a forest loses too many unique species, it can reduce the total number of plants in that forest by half, says Bradley Cardinale, lead author of the meta-analysis published this week in the Proceedings of the National Academy of Sciences (PNAS).

“Those unique species are not replaceable. Nothing takes their place. It was a really shocking finding for me,” Cardinale, a biologist at the University of California, Santa Barbara, told IPS. “That’s how much biodiversity matters.”

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