Just how tall can a tree grow? And why don't the biggest ones topple over? Elinor and her friends figure it out It's field trip day Elinor, Olive and Ari are going with their class to see some of the tallest trees in the world: giant sequoias. The friends are pretty sure the sequoias will be bigger than the trees in their neighborhood. But they never expect what they find when they walk deep into the forest and stand beside one of the largest...