Iceland is a country of fire and ice, home to several volcanoes and straddling two tectonic ... Most of it was very fine particles which formed an ash cloud, rising 6-10km (20,000-35,000 feet) into ...

The particles are neutrinos, which are extremely difficult to detect on Earth. To find them, scientists turned a vast block of Antarctic ice into a detector. "This is the first time we're seeing ...

A similar thing happens to ice. Molecule-by-molecule, ice particles will leap off a patch of ice on a sidewalk and escape into the air as vapor. This is called sublimation. During sunny ...