Threats to the Human Species

Almost as long as there has been human existence, there have been theories on how it will end. Which, if any, of these potential threats do you think is most realistic?

Global Warming

A Disappearing Phytoplankton

by Keith Stewart Climate and Energy Campaigner, Greenpeace Canada

Nuclear War

First Posted: Oct 27 2010 01:06 AM
Updated: about 1 month ago

Greenpeace's Keith Stewart explains how humans are causing irreparable harm to the planet by heating it up.

If we keep treating our planet as we have been over the last centuries, says Greenpeace policy expert Keith Stewart, then we won't have a planet to inhabit for much longer. And with the fate of our planet goes the fate of our species.

Comments

LATEST NEWS

So Long and Thanks for All The Hits

In which we bid adieu and do something t...

MacKay Underestimated Libya Cost by $300 M

Well, at least we won, kinda....

SpaceX Laying Groundwork for Visits to Private Space Stations

No more low-orbit fly-bys for SpaceX –...

Globe and Mail To Hide Behind Paywall

As if they actually expect people to pay...

MCA's Death Puts 7 Beastie Boys Albums on Billboard 200

Only Hello Nasty and To The Five Borough...

Prince Charles Does The Weather, Is Actually Charming

While he might never get to be king, at ...

Greek Unemployment Hits New High

One in four Greeks are unemployed, while...

NDP Outpolling Tories

The NDP is now nipping at the Tories' he...

Details of First Low-Cost 'Artificial Leaf' Published

An MIT chemist has found a way to replic...

National Post Infographic Details Child, Forced Labour Worldwide

Some of the world's hottest economies �...

Rothko, Pollock Help Smash Contemporary Art Auction Record

Nearly $400 million was spent on a haul ...

Only A Quarter of Americans Support Afghanistan War

A new poll shows that support for the de...

POLL

poll bytwiigs.com

MOST POPULAR

We Will Not Be Silenced

Avoiding a Lost Decade in Canada

Foreign Affairs in Disarray?

The Search for Extraterrestrial Intelligence

play

FEATURED VIDEO

The Spirit Bear has come to symbolize the mystery and greatness of the West Coast but also what is threatened by oil interests.

<i>Tipping Barrels</i> follows surfers into the Great Bear Rainforest, where they learn more about the region and issues confronting it.

Tipping Barrels Follows Surfers into Great Bear Rainforest

The Spirit Bear has come to symbolize the mystery and greatness of the West Coast but also what is threatened by oil interests. Tipping Barrels follows surfers into the Great Bear Rainforest, where they learn more about the region and issues confronting it.

POPULAR CONTRIBUTORS

Jennifer Holmgren CEO, LanzaTech.

Yasheng Huang International Program Professor, Chinese Economy and Business; Professor, Global Economics and Management, MIT Sloan School of Management.

Tony Burman Former managing director; current head of strategy for the Americas, Al Jazeera English.

Richard Zeckhauser Frank P. Ramsey Professor of Political Economy, Kennedy School, Harvard University.

Karen Mazurkewich Journalist; Co-director of a report on intellectual property and innovation for the CIC.

Michael Ignatieff Senior Resident of Massey College, University of Toronto;Former Leader of the Liberal Party of Canada;

Linda Martín Alcoff Professor of Philosophy, City University of New York.

Jeffrey D. Sachs Director, Earth Institute, Columbia University; Quetelet Professor of Sustainable Development; Author, The Price of Civilization