science

Katharine Hayhoe

Katharine Hayhoe is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Katharine Hayhoe rather than just read about it. In short: Katharine Anne Scott Hayhoe (born 1972) is a Canadian atmospheric scientist. She is a Paul Whitfield Horn Distinguished Professor and an Endowed Chair in Public Policy and Public Law at the Texas Tech University Department of Political Science.

Key takeaways

Katharine Hayhoe belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Katharine Hayhoe to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Katharine Hayhoe from memory before moving on to harder problems.

Reference excerpt

Katharine Anne Scott Hayhoe (born 1972) is a Canadian atmospheric scientist. She is a Paul Whitfield Horn Distinguished Professor and an Endowed Chair in Public Policy and Public Law at the Texas Tech University Department of Political Science. In 2021, Hayhoe joined the Nature Conservancy as Chief Scientist.

Early life and education Hayhoe was born on April 15, 1972, in Toronto, Ontario. Her father, Doug Hayhoe, was a science educator and missionary. When Hayhoe was nine, her family moved to Cali, Colombia, where her parents served as missionaries and educators. Hayhoe received her Bachelor of Science degree in physics and astronomy from the University of Toronto in 1994. She began her college career studying astrophysics, but upon taking a course on climate science to fulfill a course requirement, she shifted her focus to atmospheric science, which she ultimately specialized in at graduate school. Hayhoe attended graduate school at the University of Illinois at Urbana-Champaign, where she received her Master of Science and Doctor of Philosophy. Her PhD committee was chaired by Donald Wuebbles, who recruited her for a research project assessing the impacts of climate change on the Great Lakes.

Personal life Hayhoe, who is an evangelical Christian, is the daughter of missionaries. She has stated that admitting her life as a Christian and a scientist is "like coming out of the closet". Her father, Doug Hayhoe, is a former science and technology coordinator for the Toronto District School Board, and emeritus professor of education at Tyndale University College and Seminary in Toronto. Hayhoe credits her father as an inspiration with regard to her belief that science and religion do not have to conflict with one another. She met her husband, Andrew Farley, while doing graduate studies at the University of Illinois. Farley is an author, pastor and SiriusXM radio host who leads The Grace Message, a Christian ministry.

Research career Hayhoe has worked at Texas Tech since 2005. She has authored more than 150 peer-reviewed abstracts, journal articles, and other publications including the Second, Third, Fourth and Fifth National Climate Assessment for the US Global Change Research Program, as well as the National Academy of Sciences report “Climate Stabilization Targets”. Shortly after the Third Assessment was released, Hayhoe said, "Climate change is here and now, and not in some distant time or place," adding that, "The choices we're making today will have a significant impact on our future." She co-authored the American Association for the Advancement of Science's What We Know, and How We Respond reports. In 2021, she was co-author of the book Downscaling Techniques for High-Resolution Climate Projections: From Global Change to Local Impacts (Cambridge University Press, 2021).

Recognition In 2014, Hayhoe was named one of Time magazine's "100 Most Influential People". In 2017, she was named one of Fortune magazine's "50 World's Greatest Leaders". She has also been named to Foreign Policy magazine's list of "100 Leading Global Thinkers" twice, in 2014 and 2019. Also in 2019, Hayhoe was named one of the United Nations Champions of the Earth in the science and innovation category. Hayhoe has received honorary doctorates from Colgate University, Victoria University at the University of Toronto, Wycliffe College at the University of Toronto, and Trinity College (CT). She has received the American Geophysical Union's Climate Communication and Ambassador Awards, and is a fellow of the American Geophysical Union, the American Scientific Affiliation, the American Academy of Arts and Letters, and an honorary fellow of the Canadian Meteorological and Oceanographic Society. In 2023 Hayhoe was elected to the American Academy of Arts and Sciences. In March 2026, the University of Michigan's Department of Climate and Space Sciences and Engineering honored Hayhoe with the prestigious Spencer Lecturer Award for her lifetime contributions to atmospheric science, downscaling regional climate models, and bridging the gap between localized infrastructure planning and global climate projections.

Climate communications In addition to her research on climate change, Hayhoe is known for her communication around climate change and her advocacy efforts around climate action. Professor John Abraham has called her "perhaps the best communicator on climate change." Hayhoe has also spoken at the Nobel Peace Prize forum and appeared at the White House with former President Barack Obama and the actor Leonardo DiCaprio at the first South by South Lawn festival. As of 2023 Hayhoe's 2018 TED talk, "The most important thing you can do to fight climate change", had over 4 million views. She has also written the book Saving Us: A climate scientist's case for hope and healing in a divided world. She is active on over a dozen social media channels, writes regularly for Scientific American, and her newsletter Talking Climate shares good news, "not-so-good" news, and something people can do about climate change every week. In her communication, she emphasizes the importance of not engaging with people she refers to as "dismissive", after the Yale University Program on Climate Communication's Six Americas. On September 28, 2018, she said, "The six stages of climate denial are: It's not real. It's not us. It's not that bad. It's too expensive to fix. Aha, here's a great solution (that actually does nothing). And – oh no! Now it's too late. You really should have warned us earlier."

… excerpt ends here. Continue reading the full article.

Illustrations

Worked examples

Example 1 — a first encounter with Katharine Hayhoe

Start with the simplest possible case. Write down what Katharine Hayhoe claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Katharine Hayhoe before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Katharine Hayhoe ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Katharine Hayhoe

In research: Katharine Hayhoe appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Katharine Hayhoe in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Katharine Hayhoe is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1972 births, 21st-century Canadian scientists, 21st-century Canadian women scientists, so understanding it makes those chapters shorter.
In everyday life: Look for Katharine Hayhoe outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Katharine Hayhoe” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Katharine Hayhoe in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Katharine Hayhoe means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Katharine Hayhoe out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Katharine Hayhoe in simple terms?

Why does Katharine Hayhoe matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Katharine Hayhoe?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Katharine Hayhoe.