Species
‘Wild theory’: Can aggressive cancers evolve into new species?
Aggressive cancers can spread so fiercely that they seem less like tissues gone wrong and more like invasive parasites looking ...
Why scientists are hesitant to declare a species extinct
If so many species are going extinct, why don’t we hear about new extinctions every day? The answer to that ...
Were the Denisovans a collection of 3 different species?
A new study using genetic data is offering an intriguing new look into the history of the Denisovans, revealing them as a ...
How can seemingly-unique animals be genetically the same?
More and more, biologists are discovering that organisms thought to be different species are, in fact, but one. A recent ...
