How does one species become many?

Which Lost Species May be Found Again? Huge Study Reveals Clues

'This is unlikely to be an isolated event': 1st polar bear death from bird flu spells trouble for species

Saving the Apple’s Ancient Ancestor in the Forests of Kazakhstan. Found in the Tian Shan mountains, Malus sieversii could hold the secret to making other species of the fruit more stress-resistant.