Two ransom notes are now public in the Nancy Guthrie case, but an expert says they may lead investigators to someone other than her suspected abductor.

American science is at a crossroads, but these extraordinary people, with their passion for knowledge and their dedication to our competitive future, are building its next chapter.

Earlier this year, the Lacks estate settled a lawsuit regarding a company’s profiting off of HeLa cells. The case serves as a reminder of the importance of proper ethics in human research.