The International Electrotechnical Commission (IEC) surprised many earlier this year when it rejected a proposal to increase the charge limit for A3 refrigerants (e.g., propane) from 150 to 500 grams ...

Refrigerants used in air conditioners are changing … again. The last round of changes took place between the mid-1990s through 2010, as chlorofluorocarbon (CFC) and hydrochlorofluorocarbon (HCFC) ...

The Nature Index 2026 Research Leaders reveal the leading institutions and countries/territories in the natural sciences, health sciences, applied sciences and social sciences, according to their ...

Smoke rises from the wreckage of several oil tanker cars that derailed in a field near the town of Heimdal, North Dakota, on May 6, 2015. The accident occurred just days after the U.S. government ...