In concert with the development of new materials in the last decade, the need for toxicological studies of these materials has been increasing. These new materials include a group of rare earths (RE). The use of RE nanotechnology is being considered in some green applications, to increase their efficiency by using nano-sized RE compounds, and therefore hazard evaluation and risk assessment are ...

Moral hazard is one of the most basic concepts in economics: If someone pays you for your accidents, you will expend less effort trying to avoid them. Insurance companies understand this perfectly well. That's why most insurance contracts include customer deductibles and limited coverage. This seems straightforward enough. Why is it, then, that policymakers appear to have missed this important ...