Elliott and Wes Harvell, a rosarian at Jackson & Perkins, note that roses require regular fertilization (especially in May) ...

Who hasn't seen it before: the view through the microscope in which a sperm penetrates an egg cell and fertilizes it. This fundamental step in procreation happens dynamically and seemingly without ...

(a) A pollen grain containing the two sperm cells. It produces a pollen tube, which arrives at the ovule. After the arrival, one of the synergid cells degenerates and the pollen tube bursts to ...

A study suggests that iron fertilization, the process of putting iron into the ocean to encourage the growth of carbon dioxide capturing alga blooms, could backfire. A new study on the feeding habits ...