Chemists and materials scientists are trying to learn to build ultra-small, precisely ordered structures for use in optics, electronics, and other applications. Writing in the journal Science, Chad Mirkin and colleagues describe a way to use snippets of DNA to tailor the shape and size of crystal structures, tweaking them to fit specific uses.
During my recent trip to England, I participated as a faculty member at two podiatry and physiotherapy meetings. This was my third trip to the country in the past five years, giving me the opportunity to lecture and interact with colleagues. My experiences this time ran the gamut from dismay about the healthcare system in the United Kingdom to awe and respect for the level of care many of our colleagues offer in this country.