Chemistry/Physics/Materials Science is one of the news areas offered by--EUREKALERT!
EurekAlert! is an online, global news service operated by AAAS, the science society. EurekAlert! provides a central place through which universities, medical centers, journals, government agencies, corporations and other organizations engaged in research can bring their news to the media and to the public. EurekAlert! features news and resources focused on all areas of science, medicine and technology.
One of many New York Times RSS options--SCIENCE--includes podcasts, profiles of scientists, regular science columns and related feature stories.