A study published in the Proceedings of the National Academy of Sciences proves that evolution is being affected by recent urbanization. Species are adapting to the new environment. But this means that some species will adapt while some will fail to do so and will become extinct. This is a wake-up call to the conservation biologists to devise a sustainable model of urban living.
Cheetah has already been driven out of 91% of its historic range. Less than 50 Asiatic cheetahs are left in the world. Less than 200 Saharan cheetahs are roaming the planet now. It is feared that these species may soon become extinct like American cheetahs.
Females of a critically endangered sawfish species have taken a drastic step toward survival: parthenogenesis, or asexual reproduction. This is the first time that a vertebrate that typically reproduces sexually has been observed engaging in parthenogenesis.