Scientists caught a famous “sandwich” molecule in a rare hidden state, uncovering a long-missing step in its formation. For more than 70 years, metallocenes have been among the most important molecules in organometallic chemistry. These compounds feature a metal atom positioned between two carbon-based rings, creating a structure often described as a molecular sandwich. They [...]

A mysterious low-frequency sound known as The Hum has been reported around the world for decades, leaving researchers searching for its source. Imagine lying in bed late at night and hearing a faint engine-like drone that seems to come from somewhere outside. You check the windows, listen for traffic, and search for a nearby machine. [...]