Nature and Environmental Book Reviews

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Articles on Conservation

Biodiversity and Conservation

This Earth is teeming with Life – from single-cell organisms to blue whales and giant redwoods. Somewhere in the middle, size-wise, is humanity – the most destructive species ever to live on this planet.

Biodiversity is the cumulative variety of life forms within a given ecosystem, and is a measure of the health and vitality of that ecosystem. Richness of biodiversity offers depth and breadth of gene pool and speciation . . . learn more»


Conservation of Endangered Animals

Humans first entered North America via the Bering land bridge about 13,000 years ago. Extinctions of all the major fauna of the continent – North American horses, a camel, the Shasta ground sloth, the saber-toothed tiger, a tapir, a giant sloth, a giant beaver and the flat-headed peccary – followed shortly.

The mammoth, the mastodon and the short-faced bear lasted a little longer, becoming extinct around 12,000 years ago . . . learn more»


Conservation of Natural Resources

Watchlist 2007, the Audobon Society’s recent report on the welfare of birds in America, reports that nearly a quarter of the 700 bird species in America are threatened, usually by direct human activity, like development and gas and oil production.

According to Callum Roberts in his book The Unnatural History of the Sea, current stocks of cod in the North Atlantic are less than 1/3 of one percent of the population of these fish before Europeans came to the New World . . . learn more»


Conservation of Water Resources

The world’s supply of clean fresh water is steadily decreasing as water is used at a faster rate than it can be replenished by rainfall or snowmelt. Water use has grown at twice the rate of population during the past century. The Middle East, North Africa and South Asia are chronically short of water.

69% of worldwide water use is for agricultural irrigation, of which 1/3 is unsustainable. Much irrigation water is lost due to evaporation . . . learn more»


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