I'm a climate scientist, which means I get to study my favorite planet: Earth.


    I'm also a writer, storyteller, and human. And I'm so glad you've stopped by.

  • Writing

    Articles for a wider audience

    We Need Courage, Not Hope

    On thermodynamics and grief

    We Should Never Have Called it Earth

    A slow-motion horror story

    The Parallel Universes of a Woman in Science


    Nautilus Magazine

    Personal essay about science, love, and choices

    The Hidden Importance of Clouds

    Nautilus Magazine

    Will Nature save us from ourselves?

    The Cloud Conundrum

    The role clouds play in climate change

    I Don't Have Time for Despair

    I'm too busy doing science

    What's Really Warming the World?

    Eric Roston and Blacki Migliozzi's splendid visualization of our data

    Things to Say

    My blog

    Sporadically updated and deeply irresponsible


    Speaking and listening


    Questions and answers


    Five Books

    Recommendations on climate change and uncertainty

    The enigma of clouds and climate change

    Some answers on climate change


    Science and stuff

    Columbia University and NASA GISS

    Associate Research Scientist

    I study climate forcings (things that affect the planet's energy balance) and feedbacks (processes that speed up or slow down warming). Our work here has shown that observational estimates of the Earth's sensitivity to greenhouse gases are probably biased low: assuming climate changes will be small is not a very good idea.

    Lawrence Livermore National Laboratory

    Postdoctoral Researcher

    My postdoctoral work identified a "fingerprint" of human influence on global precipitation patterns and showed that we are already changing rain and snowfall. This is both reassuring, because it suggests climate model projections are credible, and terrifying, because it suggests climate model projections are credible.

    Carnegie Institution

    Postdoctoral Scholar

    How much wind power could we theoretically extract from the atmosphere before severe climate consequences result? Our work showed that this geophysical limit is large- an order of magnitude greater than worldwide electricity demand. So go ahead and put those turbines in the jet stream!



    Science Fellow

    As a Science Fellow at Stanford, I worked on policy-relevant scientific issues like nuclear power safety, climate model downscaling, and electrical grid resilience. Our work suggested that distributed grids, with electricity generated at local scales, can be inherently more fault-tolerant than centralized grids.

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