Add Yahoo as a preferred source to see more of our stories on Google. Philippe Gerber / Getty Images Trees are made of wood, so it’s safe to assume that, to some extent, they are flammable—but some ...

Trees are made of wood, so it’s safe to assume that, to some extent, they are flammable—but some pose more of a fire safety issue than others. Fast-growing junipers and eucalyptus, for example, as ...