US President Donald Trump calls Ukraine’s intensified strikes deep inside Russia an “escalation”.

A surprising reversal in molten iron flow beneath the Pacific is giving scientists a sharper view of how Earth’s magnetic ...

A new global study is offering a clearer view of how some of the world’s most valuable mineral deposits form, tracing their ...

South African diamonds have revealed nickel-rich metallic inclusions, offering the first direct evidence of reactions predicted to occur deep in Earth’s mantle. The study shows how oxidized melts ...

An artist's render of Mars. (Kevin M. Gill/Flickr/CC BY 2.0) For decades, our picture of Mars was of a dead desert world. Its ...