A rewritable optical disc. First used in drives by Panasonic in the late 1980s, the phase change technology was subsequently employed in all major optical drives, including CD-RW, DVD-RW, DVD+RW, ...

A non-volatile, random access memory (RAM) technology that was designed to replace flash memory and, ultimately, DRAM memory. Developed by Stanford Ovshinsky, reknowned for his inventions in memories ...

The Nature Index 2025 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 ...