Zeke Hausfather

Zeke is an energy systems analyst and environmental economist with a strong interest in conservation and efficiency. He was previously the chief scientist at C3, an energy management and efficiency company. He also cofounded Efficiency 2.0, a behavior-based energy efficiency company. He received a bachelor’s degree from Grinnell College, a master’s degree in environmental science from Vrije Universiteit in the Netherlands, and another master’s degree in environmental management from the Yale School of Forestry and Environmental Studies. He has published papers in the fields of environmental economics, energy modeling, and climate science.

Chinese coal mine

Growth of Chinese fossil CO2 emissions drives new global record in 2023

Global carbon dioxide emissions from fossil fuels and cement have increased by 1.1% in 2023, hitting a new record high of 36.8bn tonnes of CO2 (GtCO2), according to the 2023 Global Carbon Budget report by the Global Carbon Project.

December 20, 2023

LNG delivery ship

UNEP: Meeting global climate goals now requires ‘rapid transformation of societies’

The world faces a “rapidly closing window” to meet the Paris Agreement’s goals, warns the latest “emissions gap” report from the UN Environment Programme (UNEP).

November 8, 2022

Haze from West Coast fires in MA

State of the climate: Summer 2021 sets new high for average land temperature

The year so far has been one of extremes, featuring record-shattering heatwaves, wildfires and flooding, as well as the warmest-ever meteorological summer – June, July and August – in the global land-surface record.

October 20, 2021


Explainer: Will global warming ‘stop’ as soon as net-zero emissions are reached?

Much of the confusion around committed warming stems from mixing up two different concepts: a world where CO2 levels in the atmosphere remain at current levels; and a world where emissions reach net-zero and concentrations begin to fall.

May 6, 2021

energy: Image: Fiona Paton CC BY-NC-ND 2.0

UNEP: Net-zero pledges provide an ‘opening’ to close growing emissions ‘gap’

The recent net-zero pledges by major emitting countries and the potential for a “green recovery” from the Covid-19 pandemic “presents the opening” for the world to close the growing “gap” between existing commitments and what is needed to limit global warming to meet the Paris Agreement goals.

December 10, 2020

Rim Fire in California

In Tackling the Global Climate Crisis, Doom and Optimism are Both Dangerous Traps

The popular discourse around the climate emergency all too often highlights fringe voices that predict the end of the world or suggest that there is little to worry about. But as the climatologist Steven Schneider presciently remarked a decade ago, when it comes to the climate “the end of the world” and “good for us” are probably the two least likely outcomes.

August 7, 2020

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