This animated film shows the life cycle of a butterfly and a frog, and takes us through the human life cycle. It explores common animal life cycles and shows how the ‘circle of life’ operates in ...

Most of us learned about butterfly metamorphosis as a kid — a wriggly caterpillar molts its skin to form a tough chrysalis and emerges as a beautiful butterfly. But how exactly do chrysalises stay ...

Michelle Starr is CNET's science editor, and she hopes to get you as enthralled with the wonders of the universe as she is. When she's not daydreaming about flying through space, she's daydreaming ...