Featured series 
Tag: Species
-
Nation & World
One million species, and counting
Just weeks after adding its millionth Web page, the online biology clearinghouse called the Encyclopedia of Life (EOL) has received a grant from the Sloan Foundation that will allow it to continue its mission of documenting every living plant and animal species on the globe.
-
Nation & World
Giving hybrids some respect
Harvard researchers have used genetic analysis to confirm that the Appalachian tiger swallowtail butterfly arose through hybridization of two other species, the Canadian and Eastern tiger swallowtails, highlighting a rare case of speciation through hybridization in animals.
-
Nation & World
Cultivating trouble
Only 39 percent of the nearly 10,000 North American plant species threatened with extinction are being maintained in collections, according to the first comprehensive listing of the threatened plant species in Canada, Mexico, and the United States.
-
Nation & World
Caught in the act
Breaking up may actually not be hard to do, say scientists who’ve found a population of butterflies that may be on its way to a split into two distinct species.
-
Nation & World
Potent new strategy for mapping animal species shakes up tree of life
Since the 1859 publication of Charles Darwin’s “Origin of Species,” efforts to trace evolutionary relationships among different classes of organisms have largely relied on external morphological observations.