Trachea to air sacs. Many insects, such as grasshoppers and bees, which actively pump the air sacs in their abdomen, are able to control the flow of air through their body. In some aquatic insects, the tracheae exchange gas through the body wall directly, in the form of a gill, or function essentially as normal, via a plastron. Note that despite being internal, the tracheae of arthropods are lined with cuticular tissue and are shed during moulting (ecdysis). In 2008, a Colombian woman, Claudia Castillo (30), received a trachea transplant using her own stem cells. Between 2011 and 2014 Paolo Macchiarini
What Is Love? (Twice song) What Is Love? (Twice song) "What Is Love?" (stylized as "What is Love?") is a song recorded by South Korean girl group Twice, the lead single of their fifth extended play of the same name. The song was released on April 9, 2018 by JYP Entertainment and distributed by Iriver. "What Is Love?" was written and composed by Park Jin-young, who previously produced "Signal", and it was arranged by Lee Woo-min "collapsedone", who co-produced "Knock Knock" and "Candy Pop". According to JYP Entertainment, the song is about "the love girls would dream about or imagine after learning about it through