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We're doing everything we can to get the message out about the biodiversity crisis and its solutions.


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Communicating through films and books

Extinction: The Facts 

BBC Documentary presented by Sir David Attenborough (2020)

Liz Hadly provided her expert testimonial for this BBC documentary presented by Sir David Attenborough. 

With a million species at risk of extinction, this hour-long film explores how this crisis of biodiversity has consequences for us all, threatening food and water security, undermining our ability to control our climate -- and even putting us at greater risk of pandemic diseases.

The film will premiere in the US on March 31 2021, at 


Tipping Point for Planet Earth

Book by Elizabeth A Hadly and Anthony D Barnosky (2016)
Cover of book Tipping Point for Planet Earth: How Close Are We To the Edge?

"World-renowned scientists Anthony Barnosky and Elizabeth Hadly explain the growing threats to humanity as the planet edges toward resource wars for remaining space, food, oil, and water. And as they show, these wars are not the nightmares of a dystopian future, but are already happening today. Finally, they ask: at what point will inaction lead to the break-up of the intricate workings of the global society?

The planet is in danger now, but the solutions, as Barnosky and Hadly show, are still available. We still have the chance to avoid the tipping point and to make the future better. But this window of opportunity will shut within ten to twenty years. Tipping Point for Planet Earth is the wake-up call we need."

Read the Book

Public talks and lectures


Talk entitled, A Tipping Point? Using the Past to Forecast Our Future.

Educational resource

Liz Hadly explains the Impacts of Climate Change on Yellowstone.

Liz Hadly investiga el impacto del cambio climático en Yellowstone (HHMI BioInteractive, 2014)

Loss of biodiversity in a human-dominated world (iBiology video 1, 2016)

Loss of Biodiversity - The Tiger: A species on the brink (iBiology video 2, 2016)

Accidentally, A Professor (India BioScience, 2015)

Teaching in the field

Liz is a regular Faculty Leader for Stanford Travel/Study expeditions. She has led Travel/Study trips in over ten countries since 2009.

See Liz Hadly's upcoming trips

How to take action

Logo of consensus for action
Policy Influence

Consensus for Action

We established ConsensusForAction, a scientists' consensus for how to keep Earth healthy. Thousands of people have signed on - we hope you will, too. ConsensusForAction aims to: 1) Communicate what the science says about climate change, extinctions, ecosystem loss, pollution, and population overgrowth, and 2) Stimulate the interactions between science, government, business, and you that are needed to solve these global problems. 

 Read the One-Pager   Endorse the Statement

Documentary films

Tomorrow (2016)

Liz Hadly features in this inspiring and uplifting documentary film about solutions to the environmental crisis. The film-makers were inspired by the 2012 paper co-authored by Liz, Tony Barnosky (Executive Director, Jasper Ridge Biological Preserve) and 20 other authors, Approaching a state shift in Earth’s biosphere. The film won a Cesar for Best Documentary (French equivalent of Academy Awards).

Watch the film

Social Media