Sometimes, it seems as if scientists know everything about the world. They've recorded the songs of humpback whales, dug up the bones of dinosaurs, and even tracked the storms of Jupiter. But the young scientist in this charming picture book knows there is so much more to explore, like the answers to questions such as: Do different trees speak different languages to one another through their tangled rainforest roots? Do faraway suns have planets like ours, with air and oceans and land? How do ideas pop into our heads, and where do our questions come from?