Standing 70 to 100 feet, a different Norway spruce attracts crowds to Rockefeller Center every holiday season.

Wood-boring beetles hardly faze them ... made by Sillett’s team is that even the rate of growth of a big tree, not just its height or total volume, can increase during old age.

The tree has a dense, highly resinous wood that is a formidable barrier to ... bristlecone pines put a greater premium on getting by than on getting big. The tallest sequoia, a coast redwood ...

Yet nothing compares to the impression the original tree left in the minds of children, many of which are now parents. The large wooden tree, with big brows and a wagging red tongue that would ...