You are entirely forgiven for not knowing this, since they are not especially rare — cerium is about as common as copper. The problem is that they’re difficult to isolate and purify; it wouldn’t be ...

From levitating globes to mini plasma balls, these science toys and gadgets turn complex principles into hands-on fun. Each item blends education and entertainment, sparking curiosity about physics, ...

Zhang Hongwei, vice-chairman of the regional association for science and technology, outlined the transformation at a news ...