species

What makes two species different?

January 10, 2019

Scientists have long believed that the difference between two species came down to reproductive incompatibility as a result of adapting to different environments. ...

Earth had extra giraffe species all along

September 16, 2016

Earth boasts four separate species of giraffe, not one, as scientists formerly believed, according to new research. To untangle the giraffe lineage, researchers ...