Thanks for Glenn Hess’s article “U.S. Seeks Tighter Rail Safety Rules” (C&EN, Aug. 18, page 22). However, the word “volatile” is misused when he writes that “ethanol is less volatile than crude oil.” ...

An erroneous term. Storage devices, including magnetic disks and tapes, solid state disks (SSDs) and rewritable optical discs, hold their content permanently until purposely changed (they are non ...

Lasting without power. All storage is non-volatile; however, most memory (RAM) is not, but there are exceptions (see non-volatile memory). See storage vs. memory. THIS DEFINITION IS FOR PERSONAL USE ...

The Nature Index 2024 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...