KYIV, Ukraine — A drone armed with a warhead hit the protective outer shell of Ukraine’s Chernobyl nuclear plant early Friday, damaging the structure and briefly starting a fire, in an attack Kyiv ...

The activity of the solid Earth – for example, volcanoes in Java, earthquakes in Japan, etc – is well understood within the context of the ~50-year-old theory of plate tectonics. This theory posits ...

The distribution of outermost shell electrons, known as valence electrons, of organic molecules was observed for the first time. As the interactions between atoms are governed by the valence electrons ...

KYIV, Ukraine (AP) — A Russian drone with a high-explosive warhead hit the protective containment shell of the Chernobyl Nuclear Power Plant in the Kyiv region during the night, Ukrainian President ...