Clues to a Very Old Extinction and Why Calicos Look That Way
By DOUGLAS QUENQUA
Science and health news from the past week, including a mass extinction 252 million years ago, vaccines and pizzas that don’t spoil and clues to a cat’s signature coat.
Published: February 25, 2014 at 5:00AM
via NYT Science http://nyti.ms/1eqECrm