A parasitoid is an organism that spends a significant part of its life attached to or inside a single host, which it feeds on and ultimately kills. Parasitoid larvae are dependent on a host during development, but adult parasitoids are free-living insects. In a typical parasitic relationship, the parasite and host coexist without lethal damage to the host. However, in a parasitoid relationship, the host is killed, typically before it can produce offspring. What is a hyperparasite?
Back in the day
Luna 5 was an unmanned Soviet spacecraft designed to continue investigations of a lunar soft landing. On May 10, the spacecraft began spinning around its main axis due to a problem in a flotation gyroscope in the guidance system unit. A subsequent attempt to fire the main engine failed because of a ground control error, and Luna 5 impacted the lunar surface at the Sea of Clouds. Luna 5 was the second investigatory Soviet spacecraft to "land" on the Moon. What was the first?
Born on a day like today
Florence Nightingale is considered the founder of modern nursing. She organized a unit of 38 women nurses in 1854 for service in the Crimean War, and, by the end of the war, her intense efforts had made her a legend. With the testimonial fund collected for her war services, she established the Nightingale School and Home for training nurses at St. Thomas's Hospital in London. Why was Nightingale called "The Lady with the Lamp"?