The Cretaceous Period lasted for nearly 80 million years. Discover what the climate was like in this geological period, where the continents were and what animals and plants lived on them. …

Our closest ancient human relatives. Neanderthals were humans like us, but they were a distinct species called Homo neanderthalensis.. Read Chris Stringer's argument for why Neanderthals …

Aphids are little sap-sucking insects that secrete honeydew, a sugary liquid that is the waste product of their diet. Many aphid species are known to engage in a mutualistic relationship …

The word Anthropocene comes from the Greek terms for human ('anthropo') and new ('cene'), but its definition is controversial. It was coined in the 1980s, then popularised in 2000 by …

Natural selection is a mechanism of evolution. Organisms that are more adapted to their environment are more likely to survive and pass on the genes that aided their success. This …

Jellyfish have survived for over 500 million years, making them more ancient than the dinosaurs. Today these otherworldly creatures can be found around the world, from coastal shallows to …

The earliest definitive dinosaur is not one animal but an entire ecosystem containing a few different species. There's no universally accepted dinosaur species that lived earlier in time. …

Discover how a giant interstellar cloud known as the solar nebula gave birth to our solar system and everything in it. The solar system as we know it began life as a vast, swirling cloud of gas …

The UK is home to two squirrel species: the Eurasian red squirrel (Sciurus vulgaris) and the grey squirrel (Sciurus carolinensis).The species you are more likely to see scampering through the …

Climate change is the defining issue of our time. We have reached a pivotal moment in deciding our planet's future. Find out what climate change is, why it matters and what it could mean for …