Three Feet of Sea Level Rise Very Possible by Century's End

A preview of the next major United Nations climate change report is taking a stronger stance on the role of humans in causing global warming and predicting a possible sea level rise that would endanger cities such as London, New York, and Shanghai.

1 minute read

August 20, 2013, 5:00 AM PDT

By Jonathan Nettler @nettsj


"An international team of scientists has found with near certainty that human activity is the cause of most of the temperature increases of recent decades, and warns that sea levels could rise by more than three feet by the end of the century if emissions continue at a runaway pace," reports Justin Gillis. 

"The scientists, whose findings are reported in a summary of the next big United Nations climate report, largely dismiss a recent slowdown in the pace of warming, which is often cited by climate change contrarians, as probably related to short-term factors. The report emphasizes that the basic facts giving rise to global alarm about future climate change are more established than ever, and it reiterates that the consequences of runaway emissions are likely to be profound."

"The new document is not final and will not become so until an intensive, closed-door negotiating session among scientists and government leaders in Stockholm in late September," notes Gillis. "But if the past is any guide, most of the core findings of the document will survive that final review."

Monday, August 19, 2013 in The New York Times

Young Professional

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching. Mary G., Urban and Environmental Planner

I love the variety of courses, many practical, and all richly illustrated. They have inspired many ideas that I've applied in practice, and in my own teaching.

Mary G., Urban and Environmental Planner

Get top-rated, practical training for planners

"Planetizen federal action tracker" logo superimposed over black and white image of US Capitol dome.

Planetizen Federal Action Tracker

A weekly monitor of how Trump’s orders and actions are impacting planners and planning in America.

September 23, 2026 - Zachary Whalen

Passengers board an Amtrak train under a cloudy sky.

Amtrak, CN end decades-long dispute with eight-year agreement

The new operating agreement establishes an updated framework for the companies to work together, including processes to resolve disputes.

September 18, 2026 - Mass Transit

The Gross Reservoir, a large body of water surrounded by trees and mountains.

Judges permit Denver to divert 77,000 acre feet from the Colorado River for reservoir expansion

Overuse and climate change have caused the Colorado River’s water levels to plummet.

September 18, 2026 - Inside Climate News

A rendering of the Beltline light rail, which goes through a forested area. People walk on a path next to it.

Atlanta City Council unanimously backs $3.5 billion Beltline light rail project

The resolution was drafted after Atlanta Mayor Andre Dickens pulled support for the Atlanta Streetcar extension last year.

September 24 - Construction Review

A person boards a SEPTA bus.

SEPTA to bring nearby frequent transit to over 1 million new riders as part of decade-long plan

The agency's Accelerate plan will also bring frequent transit to twice the amount of jobs that are currently located near it.

September 24 - Mass Transit

Five people squat by a tree in NYC, helping to care for it.

NYC plants over 18,000 trees, the most new foliage in a decade

Many of the trees were planted in communities vulnerable to extreme heat.

September 24 - AM NY

FREE Course: Walkable City 1: Why Walkability?

After describing his path towards focusing on walkability as the essence of good planning, Jeff Speck marches through his five principal reasons for making more walkable places.

Reinventing Malls: Planning Alchemy—Turning Gray Fields Into Gold

The course focuses on the opportunities and imperatives that shape reinvention of mall sites.

Senior Planner

City of Thousand Oaks

Community Development Director

City of Wisconsin Rapids

Professor of Urban Planning

Harvard University Graduate School of Design