Discover how book-entry securities work, their advantages over paper certificates, and their role in modern investment. Learn about ownership recording and safer transactions.

Atomic defects in nanodiamonds enable both precise heating of lysosomes inside macrophages and nanoscale temperature ...

Todd R. Nelson is a retired educator who lives in Penobscot. His books of essays, “Cold Spell” and “The Land Between the Rivers,” are published by Down East Books.