There are 3 types of environmental stewards: doers, donors, and practitioners. Doers go out and help the cause by taking action. For example, the doers in an oil spill would be the volunteers that go along the beach and help clean up the oil from the beaches.
The presence of communication amid scientific minds was equally important to the success of the Manhattan Project as scientific intellect was. The only cloud hanging over the impressive achievement of the atomic researchers and engineers is what their success truly meant; hundreds of thousands of innocent lives obliterated.
Social and Economic Effects of the Plague. The plague had large scale social and economic effects, many of which are recorded in the introduction of the Decameron. People abandoned their friends and family, fled cities, and shut themselves off from the world. Funeral rites became perfunctory or stopped altogether, and work ceased being done.