Dinosaur Fossil (Tyrannosaurus Rex) Found by Archaeologists
Are We in the Midst of a Sixth Mass Extinction?
Today’s extinction rates are sky-high. But scientists debate if that’s sufficient evidence to conclude that Earth is undergoing a mass extinction event—or whether that’s even a helpful designation.
Are We in the Midst of a Sixth Mass Extinction?
Are We in the Midst of a Sixth Mass Extinction?

Today’s extinction rates are sky-high. But scientists debate if that’s sufficient evidence to conclude that Earth is undergoing a mass extinction event—or whether that’s even a helpful designation.

Today’s extinction rates are sky-high. But scientists debate if that’s sufficient evidence to conclude that Earth is undergoing a mass extinction event—or whether that’s even a helpful designation.

ABOVE: modified from © istock.com, Divaneth-Dias
IUCN Red List
Illustration of creatures from today’s crisis
Infographic: A Look at the Big Five Mass Extinctions
Katarina Zimmer | Jul 18, 2022
Extinction is a natural part of life on Earth. But occasionally, extinction rates have surged far beyond usual levels, driving mass extinction events that have reshaped the trajectory of life.
leatherback sea turtle making its way across a beach
Fifteen-Year Project Quantifies Threat to Reptiles
Shawna Williams | Apr 28, 2022
The study estimates that one-fifth of reptile species worldwide are at risk of extinction.
Conservation Biology Icon Georgina Mace Dies at 67
Lisa Winter | Oct 2, 2020
Mace led the work to determine the criteria for the IUCN’s Red List.