H. macrantha flowers have both male and female reproductive organs. To avoid mating with themselves, individual flowers go through a male phase and then a female phase. They rely on hummingbirds to ...

COLUMBUS, Ohio — Pollen is in the air and depending on the type of pollen, it might be sticking around. The average size of a pollen particle is 25 microns, which is equivalent to the size of a strand ...

With summer fast approaching, many people will be eager to spend time outdoors again, but for some, that excitement will be tinged with a slight dread as it also means the return of hay fever.