Animals

#979 What is DDT?

What is DDT? It stands for dichloro-diphenyl-trichloroethane and was the first synthetic pesticide. It was banned in 1972. DDT didn’t start being used in large quantities until after the Second World War, but it had been discovered quite a while earlier. Othmar Zeidler, an Austrian chemist, first synthesized DDT in 1874. Nobody realized that it […]

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#975 What causes malaria?

What causes malaria? It is caused by a parasite of the Plasmodium group and it is spread through the bite of a female Anopheles mosquito. The parasite is said to be from a group because there are five different parasites. They are called Plasmodium falciparum, Plasmodium vivax, Plasmodium Malariae, Plasmodium ovale, and Plasmodium knowlesi. The

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#951 Do piranhas eat meat?

Do piranhas eat meat? They do, but not very often and they are not the carnivores that we have been led to believe. Many people fear piranhas and they have been used in movies as a plot device. In the James Bond movie, You Only Live Twice, one of the characters was fed to piranhas,

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