The last passenger pigeon was named Martha, in honor of Martha Washington. She died of natural causes at the Cincinnati Zoo on Sept 1, 1914. Martha was around 27 years old and that’s very old for a bird. The story of the passenger pigeon is important because it shows us how relatively easy it is to lose even one of the most abundant animals on earth. We are small, but we are mighty in our numbers, over 7.5 billion and counting.
Let’s Talk About…Centrifugal Force
Have you ever wondered how we remove fat from milk to get the fat free milk or how the blood gets separated into platelets, RBC, WBC etc.?
This process of separating a particular substance from a mixture or a specific organelle from cells is known as centrifugation, which requires a force or some form of energy called centrifugal force.