Antibiotic resistance occurs when microorganisms that cause diseases become resilient and can generate ways to resist the antibiotics. This makes the antibiotics lose the ability to fight bacteria and other foreign invaders.
The first known antibiotic, penicillin, was discovered when Alexander Fleming noticed that a dangerous bacteria was not growing around a patch of mold in a petri dish. However, the initial strain of penicillin he developed was unstable and he did not focus on its use in...
The combination of both rapid growth rates and clever adaptation mechanisms make antibiotic resistance an issue that can arise quickly. Antibiotic resistance is when infectious bacteria adapt and become immune to the harmful effects of administered drugs.
The earliest written description of cancer dates to around 3000 B.C. when tumors of the breast were described in an ancient Egyptian surgical textbook. The tumors were removed using a tool known as a fire drill, according to the American Cancer Society.
Penicillin was discovered by bacteriologist Sir Alexander Fleming in 1928. The accidental discovery occurred when he observed several mold spores had fallen on and destroyed bacteria in an open laboratory dish.
Oxygen was discovered in 1772 by Carl Wilhelm Scheele, who wrote a paper with his findings in 1775, which was published in 1777. In 1774, Joseph Priestley independently discovered oxygen and published his findings in 1775.
Electricity is a concept that was discovered in part by many experts and scientists adding to its development throughout history. In fact, electricity is actually a force of energy that occurs in nature; thus, electricity was not invented, but rather discovered.