Refueling lawn mowers and other gas-powered equipment can be a splashy mess, with fuel spilling everywhere. Fix that with a simple trick and a little know-how.

One-step reverse-transcription quantitative polymerase chain reaction (qRT-PCR) is the most widely applied method for COVID-19 diagnostics. Notwithstanding the facts that one-step qRT-PCR is well ...

The amended contract prohibited Iran from reprocessing US-supplied nuclear fuel without approval, preventing its conversion into weapons-grade material. The reactors were never delivered.