Botany, the science of plants. Botany is one of the major branches of biology, the science of living things. Other major branches are zoology, the science of animals, and microbiology, the science of microscopic organisms.There are more than two hundred thousand plant species throughout the world.
Extinction can come in the form of an asteroid strike, a volcano eruption or even a nearby supernova. But sometimes devastation follows a chain of tiny, almost imperceptible changes. Who (or what) is behind what some scientists call the sixth mass extinction?
Cell suicide sounds unpleasant, but this programmed cell death is the reason your fingers and toes are no longer webbed. What's the story behind apoptosis, and what does it have to do with curing disease?