New map outlines risk of zebra mussel invasion

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The spread of two invasive alien freshwater mussel species – the zebra mussel and the quagga mussel – appears to be controlled in part by calcium levels in streams and lakes and a new risk assessment based on water chemistry suggests the Great Plains and American Southwest could be next in line for invasion.


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All News summaries for December 03, 2007

Wealth Does Not Dictate Concern for the Environment

11 minutes ago | User rating: not rated yet
It has been a long-held assumption that poor nations will not support efforts to protect the environment since their citizens are too preoccupied with meeting basic needs, such as food and housing. However, a new study in ...

Construction workers unearth mammoth bones in Minsk

18 minutes ago | User rating: not rated yet
Workers building a business centre in Minsk came across the bones of two mammoths thought to be between 25,000 and 45,000 years old, an official from Belarus' Academy of Sciences told AFP on Friday.

Women's access to credit affects efficiency in rural households

30 minutes ago | User rating: not rated yet
Rural strategies designed to induce economic growth often emphasize the need to improve access to capital for poor households. However, this approach implicitly assumes that family members pool all their resources and allocate ...

Colonial heritage metaphors used in US military conflicts

31 minutes ago | User rating: not rated yet
The historical reference to "Indian Country" presents a complex metaphor. For many Native Americans it signifies home, family, and territory; however, for others the term can refer to colonialism and Native American land ...

Limits on futures trading could boost gas prices, expert says

32 minutes ago | User rating: not rated yet
Proposals to reign in wallet-draining gasoline prices by curbing speculation in oil markets would likely increase costs at the pump instead of trimming them, a University of Illinois economist says.
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