<span>When light enters the eye, it first passes through the cornea, then the aqueous humor, lens and vitreous humor. Ultimately it reaches the retina, which is the light-sensing structure of the eye. The retina contains two types of cells, called rods and cones. Rods handle vision in low light, and cones handle color vision and detail. When light contacts these two types of cells, a series of complex chemical reactions occurs. The chemicals causes electrical impulses that are transmitted to the brain and interpreted as light.</span>
If you bake your potatoes wrapped in aluminum foil and then leave them to cool down without unwrapping the foil, you are in danger of letting dangerous bacteria grow on them. One of these dangerous pathogens is the Clostridium botulinum, a bacterium that produces toxins and causes botulism. This pathogen thrives in low-oxygen (anaerobic) environments, like the one created in the aluminum foil.
My greatest fear would have to be getting stuck in an elevator.
