Natural rubber at least showed promise as rubber sources, include the rubber fig ("Ficus elastica"), Panama rubber tree ("Castilla elastica"), various spurges ("Euphorbia" spp.), lettuce ("Lactuca" species), the related "Scorzonera tau-saghyz", various "Taraxacum" species, including common dandelion ("Taraxacum officinale") and Russian dandelion ("Taraxacum kok-saghyz"), and perhaps most importantly for its hypoallergenic properties, guayule ("Parthenium argentatum"). The term gum rubber is sometimes applied to the tree-obtained version of natural rubber in order to distinguish it from the synthetic version. The first use of rubber was by the indigenous cultures of Mesoamerica. The earliest archeological evidence of the use of natural latex from the
What We Live For What We Live For What We Live For is the second studio album by American pop rock band American Authors, produced by returning collaborators Aaron Accetta and Shep Goodman. Running at 42 minutes and comprising twelve tracks, the album was released worldwide by Island Records on July 1, 2016. The album marks the third major release by the band under the American Authors moniker, and largely continues the sound of their debut album, "Oh, What a Life". "What We Live For" debuted at number 60 on the "Billboard" 200 and spawned four singles: "Go Big or Go Home", "Pride", "What