The combined weight of all the planet's ants and termites outpaces that of all living wild mammals. That wasn't the case in ...

Not a map really, but a 5-foot-high chart showing in one glance 4,000 years of human history on a global scale. Thirty years ...

An estimated 26 per cent of Africa’s freshwater fish species are threatened (including those assessed as Critically ...

Not all birds of prey are created equal - some are chaotic sky-terrors, others are lawful hunters with precision. So we decided to map them all out. In this video, we build the ultimate alignment ...

The latest addition is the Marine Organismal Body Size (MOBS) database, an open-access resource that—as its name implies—has collected body size data for more than 85,000 marine animal species and ...

Was the First Mammal to Live on Earth the Morganucodon or Brasilodon? Experts Still Debate Learn more about Morganucodon and Brasilodon, the two species that may have given life to the mammals we know ...

In almost all mammals, male sex-determination occurs via the SRY gene on the male Y chromosome. Monotremes have evolved a totally different sex chromosome system that lacks the SRY gene.

Why do cats generally live longer than dogs? New research suggests that longer lifespans of mammals like cats could be linked to their bigger brains and more complex immune systems.

Ancient mammals that lived in the time of dinosaurs were mostly the same dark-brown colour, according to a new study providing clues about how those mammals evolved in a time where they faced ...

Early mammals were small, strictly nocturnal, and altogether less showy–verging on downright drab, as supported by a study published March 13 in the journal Science.