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Scientists have discovered a manner make the protein less susceptible to cracking, because of a silicate clay called sodium montmorillonite. Freezing sodium montmorillonite into a spongelike materials referred to as an aerogel, they infused the porous community of clay with casein plastic. The outcome? A polystyrene-kind material that, when put in a dump surroundings, begins to degrade completely [source: The Economist]. The trendy milk-based plastic does not crack as simply, due to that silicate skeleton, they usually even made the stuff less toxic by substituting glyceraldehyde for formaldehyde during the method.

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The report Russell and Burch produced in 1959 launched a concept that has since become integral to the humane observe of animal testing. The concept is known as the 3Rs: alternative, discount and refinement. The thought is that before conducting an experiment, researchers ought to search to exchange sentient creatures with non-sentient ones; where substitute is not possible, they should try to cut back the number of animals used to an absolute minimal; and eventually scientists must refine their experimentation methods to cut back the animals’ suffering as a lot as potential [supply: Flecknell]. The 3Rs are a easy method of articulating the regulations and necessities within the Animal Welfare Act. Researchers are likely to adhere to those rules not solely as a result of they’re humane, but in addition as a result of they encourage higher science.

Now not in use, Agent Orange stays a robust symbol. Although the United States and Vietnam have normalized relations, Agent Orange and its cleanup are still contentious issues. Dioxin has dissipated in lots of areas, however concentrations of the poison are nonetheless excessive in some areas, significantly the place South Vietnamese and U.S. soldiers stored Agent Orange.

Presently, greater than a billion individuals, about 17 p.c of the world’s population, haven’t got entry to wash water [supply: World Health Group]. There are several governmental and nongovernmental organizations, including UNICEF and Water Help, working to help poor communities in Asia and Africa get hold of sustainable provides of drinking water and sanitation facilities. Water shortages happen within the United States, too — many states have programs to assist the disadvantaged with acquiring enough water and paying their water and sewer payments.