Red kangaroo has the ability to freeze the development of an embryo until the previous joey is able to leave the pouch. This is known as diapause, and will occur in times of drought and in areas with poor food sources. The composition of the milk produced by the mother varies according to the needs of the joey. In addition, red kangaroo mothers may "have up to three generations of offspring simultaneously; a young-at-foot suckling from an elongated teat, a young in the pouch attached to a second teat and a blastula in arrested development in the uterus". The kangaroo has also
What Is Marriage? Man and Woman: A Defense In "Prospect", Alex Worsnip, a Teaching Fellow of Philosophy at Yale University concluded that 'the arguments of What Is Marriage [were] no less flimsy than those of other anti-gay marriage crusaders.' He concluded that the 'bad arguments' in the book amounted to 'nonsense.' In 2013, Zachary Young of "The Yale Politic" called it, 'the touchstone for the defense of marriage as the conjugal union of husband and wife' in "National Review". The book was cited by Justice Samuel Alito in his decision over United States v. Windsor, which led to a repeal of a section of the Defense of Marriage