Browse the archive
news Chemistry Evidence status: Peer reviewed · Laboratory measurement on a metal surface
A carbon nanoribbon built only from five- and seven-membered rings conducts like a metal, a Nature study reports, though only in short pieces grown on silver.
explainer Chemistry
Liquid nitrogen is −195.8 °C (−320.4 °F, 77.36 K) at sea level. How scientists know, what changes it, how long it lasts, its uses and why a spill can suffocate.
explainer Chemistry
Dry ice is −78.5 °C (−109.3 °F, 194.7 K) at sea-level pressure. Why it sublimates, how it compares with liquid nitrogen, how long it lasts and safe handling.
explainer Chemistry
Water dissolves salt and sugar because its molecules are polar and form hydrogen bonds, and its dielectric constant is 78.3. Why oil, fat and glass resist it.
news Chemistry Evidence status: Peer reviewed · Laboratory synthesis and measurements
Chemists isolated uranocenium, the +5 cation of uranocene, a uranium sandwich first made in 1968. Its bonds barely shrink, and the team explains why.
news Chemistry Evidence status: Peer reviewed · Laboratory materials study
Two niobium–titanium alloys showed no ductile-to-brittle transition at 20 K (−253 °C) in Nature lab tests. How twins make new defects, and what's unproven.
News Chemistry Evidence status: Peer reviewed · Laboratory materials study
A 3D-printed titanium–polymer lattice floated for months and stayed buoyant after cracking, though long-term ocean performance remains untested.
News Chemistry Evidence status: Peer reviewed · Ultrafast spectroscopy and model-based reconstruction
Physics · Peer reviewed. Ultrafast measurements reconstruct an exciton contracting by about 25%—a new view of light-driven energy transport.
Explainer Earth
The Dead Sea is a landlocked salt lake bordered by Jordan to the east and Israel and Palestine to the west. It is a remarkable body of water known for…
