The chemical conversion: a four-membered molecular ring (bicyclobutane, BCB) is inserted into a larger ring (thiophene), which is also aromatic. This results in a structurally complex bicyclic ring ...

Water-soluble nitrite (NO 2 ⁻) pollution from agricultural runoff and industrial discharge poses serious risks to ecosystems and human health. Excessive nitrite in drinking water can cause severe ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...