Animal Kingdom

Here’s why some people get bitten by mosquitoes more than others.

It’s true. Mosquitoes prefer biting some people over others and now scientists know why. As it turns out, about 20% of people are especially yummy to mosquitoes. Here’s why. Mosquitoes smell carbon dioxide Mosquitoes find victims by smelling carbon dioxide. They can smell it from across a large yard. People who exhale more carbon dioxide than others become targets. This is why children, who breathe smaller breaths, are bitten less often than adults. Mosquitoes prefer dark colors Just as we see with human beings, to a mosquito, certain colors stand out more than others. If you wear black, dark blue, or red, mosquitoes will swarm your way. Mosquitoes smell lactic acid Mosquitoes can also smell lactic acid, the chemical excreted when you exercise. They also…
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Animal Kingdom

Why malaria-spreading mosquitoes are so hard to kill – and how scientists found a way to kill them without impacting the environment or other living creatures.

Almost half of the people in the world live in an area where malaria parasites can infect and kill them. Malaria parasites enter the body via a mosquito. The parasites travel to the liver where they it can remain undetected for as long as a year. While in the liver, malaria parasites develop and release toxic substances that infect red blood cells. These toxins are dumped into the bloodstream and distributed throughout the body. This is when symptoms begin to show. Symptoms of someone infected with malaria include fever, chills, headache, vomiting, sweating, cough, and chest, stomach, and muscle pain. Often these symptoms appear in waves or “attacks” that come and go. Fighting the mosquitoes that transfer malaria to humans has been difficult. Mosquitoes have…
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