This site (part of naturalist Thomas J. Elpel's larger Wildflowers and Weeds website) exhibits clear photographs of members of the Dandelion Subfamily; and members of a number of tribes in the Aster Subfamily such as...
As governments begin to consider regulation of greenhouse gases, many are turning to market-based initiatives. Such programs assign emitters a certain share of emissions, and allow them to trade for emissions rights in...
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