Another theory, based on astronomy, places Jesus's birth in either the fall of 7 B.C. or the summer of 2 B.C. ... What is the origin of the Christmas tree tradition?

With fall just around the corner, you may begin to see some physical changes to your trees. While some changes are normal for this time of year, others could signal that your tree is diseased or ...

The carotenoids and anthocyanin can now give off those spectacular fall colors. When and how the leaves change color depends on tree species – some have leaves that just turn brown and fall.