A typical person contains only about 37 trillion human cells. In other words, bacteria might outnumber human cells in an average person by roughly three to one.
Don't worry about being less than human, though. Bacterial cells are very small. All of these bugs make up only between 1 and 3 percent of your body weight.
Carbon monoxide (CO) is a colourless, odourless gas produced by incomplete combustion of carbonaceous material. CO is formed as a by-product of burning organic compounds. Most fatalities result from fires, but stoves, portable heaters, and automobile exhaust cause approximately one third of the deaths.
It's something never taught in science classes. When water boils, its composition changes. Which is normally a good thing as the volatile compound evaporate and gases dissolve. This is why boiled water is safe for drinking. However, when water is left to boil for too long or is reboiled, the chemical compounds change for the worst.
"That 'chlorine' smell at the pool isn't actually chlorine," said Chris Wiant, Chair of the US Water Quality and Health Council. What you smell are chemicals that form when chlorine mixes with pee, sweat and dirt from swimmers' bodies.
A compound derived from cinnamon is a potent inhibitor of colorectal or bowel cancer, a study shows. The study found that adding cinnamaldehyde, the compound that gives cinnamon its distinctive flavour and smell, to the diet protected mice against colorectal cancer.