Smithsonian Magazine22 小时
Newly Described Fossil From Wyoming Sheds Light on When Frogs and Toads Lost Their Teeth
A fragment of upper jaw fossil from the Early Cretaceous is among the oldest examples of a toothless amphibian in the fossil ...
Why farms, not wet markets, are the pandemic threat you should be worrying about
We call them farms but the great bulk of food producing businesses in the west are better described as agricultural ...