The deepest man-made hole on Earth is no longer a gaping wound in the Arctic rock but a quiet, sealed scar. Once hyped as a literal “entrance to hell” in feverish urban legends, the Kola Superdeep ...

A report on the world’s deepest blue hole discovered in Mexico, featuring Taam Ja and a photo credited to Alcerreca-Huerta and colleagues, underscores how a combination of local knowledge, modern ...

The Indian Ocean holds the lowest gravity anomaly on Earth, a vast and subtle depression in the planet’s gravitational field located south of Sri Lank.

Hidden mega-structures deep inside Earth may have been quietly steering our planet’s magnetic field—and rewriting what we ...