Sandiegouniontribune.com covers local news in San Diego County, CA, California and national news, sports, things to do and the best places to eat, business and the San Diego housing market.

The discrepancy between the observed enhancement of the intrinsic dielectric strength of helium gas by mixing hydrogen and the performance of high-temperature superconducting (HTS) cables in the ...

Find the latest Delta Air Lines, Inc. (DAL) stock quote, history, news and other vital information to help you with your stock trading and investing.