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Climate change

  • The 20th century was the warmest century of the last 1000 years, and the 1990s was the warmest decade of that century.
  • Human activity is currently responsible for emitting 30 million tons of CO2 each year, 12 million tons of which accumulate in the atmosphere.
  • Mackerel, a warm-water fish species, has been found in recent years in the waters off Vancouver Island. There is concern that mackerel may eat young salmon, further depleting stocks.
  • Venus, our planetary neighbour, has an atmosphere that is 98% carbon dioxide. Due to the extreme greenhouse effect, temperatures reach 430°C. More...
Contribution of the Day

Biodegradable computers

Image: Biodegradable_computers.jpg

The world's first biodegradable computer, the iameco is made with biodegradable wood panels drawn from waste products in the lumber and pulp industry. It uses one third less energy than conventional computers. More...

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Today's Featured Article

Dry Composting Toilets

A Dry Composting Toilet is a toilet that does not use water to take the waste somewhere else; instead, it also allows natural processes to produce useful compost after a resting period. The main job of a composting toilet is to contain human waste and create conditions for rapid decomposition – including any pathogenic organisms – into humus; a safe stable soil-like substance. The significance of a dry composting toilet lies in the fact that not only does it conserve water, a fast depleting natural resource, and create a usable organic fertilizer to enrich the soil -- it also reduces the sewage load in cities. They are of even more significance in distant regions that are not connected to a main sewage line. More...