Pine, an evergreen tree of great economic importance. Pines are conifers (cone-bearing trees) related to firs, cedars, larches, hemlocks, and araucarias. Pines make up the genus Pinus of the family Pinaceae. There are more than 90 recognized species, all native to the Northern Hemisphere. Most pines are found in areas with a temperate climate, but a few grow in mountainous tropical regions. About 30 species are native to the United States.
Autumn rolls out its very own red carpet to make a fashionable arrival. So how do falling leaves change colors to dramatic hues of crimson and scarlet?
Nature uses color in lots of different ways. Find out why some types of cabbage are purple and what this means.