Thiers believes there are practical difficulties to be encountered with China trade. His research points to the continued power of local political leaders to shape market activity, particularly in rural China. Since local political authorities often control access to resources, production and markets, agreements at the national level to adopt international standards of production and trade are often met with resistance. Some drugs and chemicals CAN induce photosensitivity reactions in people who ingest the agents or use them topically and then expose their skin to sunlight. Sunscreens containing bergamot oil, sandalwood oil, benzophenones, PABA, cinnamates, salicylates, anthranilates, PSBA, mexenone, and oxybenzone can all cause reactions.
Titanium dioxide is the least likely sunscreen to cause a reaction.
A summer mathematics program hosted by Washington State University is designed to help correct a national shortage of applied mathematicians. The intense, seven-week program is designed to encourage and prepare math majors to go on for graduate study. National laboratories such as Sandia and Battelle are unable to find enough qualified people, and soon many who were hired in the 1960s will be retiring. This will exacerbate the problem. In addition, because of the classified nature of much the laboratories' work, there is a great need for U.S. nationals to be trained to fill these positions.