Most pollen that causes allergy problems is so small that it is invisible to the human eye. Learn all about pollen, the pollen count, and more.

Due to climate change, plants' pollination season has been growing longer and longer. As a result, people are exposed to allergens for extended periods each year, raising a major public health concern ...

An electron microscope image, colorized, shows different structures of pollen grains, including sunflower, morning glory and primrose. Dartmouth Electron Microscope Facility If pollen allergies are ...

Nature carried with it the traces of a past time, and every inch of its being revealed something new and unknown. One such material in nature was pollen grains that were not only allergens but also ...