Field Museum Conservation Expert Discusses the Rise in Extinctions

Scientists are saying the Earth is on the brink of the sixth "mass extinction event" in the 4.5 billion year history of the planet.

According to the study, Earth is losing mammal species at 20 to 100 times the rate of the past.

New studies suggest that invertebrates may also be in trouble, perhaps causing a cascading effect on other species in the future.

On Chicago Tonight, ecologist Doug Stotz will discuss his work with the Chicago Wilderness Climate Change task force, and the Field Museum's efforts in the Amazon and Andes regions of South America.

Below, images of the Field Museum's 27th Rapid Inventory, along with photos from the museum's exhibition Restoring Earth.

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