A study has found that a local event rather than a global shift in climate caused the mass extinction in South Africa.
The earth's own magnetic field offers a useful way to measure the age of rocks - information that can help unpack ancient events and aid our understanding of the present.
Climate was the main factor that triggered the evolution of warm-bloodedness in mammals and the subsequent mammalian evolutionary success.
How did survivors of the Permo-Triassic Mass Extinction adapt to their new, harsh environment? And why is that knowledge so important for modern species?
Carbon dioxide is rising faster than any time in the past 66 million years. Rapid rises in the past have been linked to mass extinctions.