The shape of the snowflake, what happens once it hits the ground, the weather that precedes it — all those things can contribute to whether the flake becomes part of a destructive wave of snow ...

Visit ancient Mars—a surprisingly temperate planet where snow or rain falls from the sky, and rivers rush down valleys to ...

A new analysis by UC Boulder geologists suggests the ancient Mars landscape was formed by falling precipitation, including ...

And this is how Mykolaiv looked like in the morning on 11 April — snowy and not at all spring-like. Unusual for April, the ...