Climate migration projections vary by hundreds of millions of people, yet most models have never been tested against historical data. We explore why experts can't agree on the scale or direction of future climate-driven migration.

샌프란시스코에서 컬럼비아 대학교 동문들이 만들었습니다
"Instead of endless scrolling, I just hit play on BeFreed. It saves me so much time."
"I never knew where to start with nonfiction—BeFreed’s book lists turned into podcasts gave me a clear path."
"Perfect balance between learning and entertainment. Finished ‘Thinking, Fast and Slow’ on my commute this week."
"Crazy how much I learned while walking the dog. BeFreed = small habits → big gains."
"Reading used to feel like a chore. Now it’s just part of my lifestyle."
"Feels effortless compared to reading. I’ve finished 6 books this month already."
"BeFreed turned my guilty doomscrolling into something that feels productive and inspiring."
"BeFreed turned my commute into learning time. 20-min podcasts are perfect for finishing books I never had time for."
"BeFreed replaced my podcast queue. Imagine Spotify for books — that’s it. 🙌"
"It is great for me to learn something from the book without reading it."
"The themed book list podcasts help me connect ideas across authors—like a guided audio journey."
"Makes me feel smarter every time before going to work"
샌프란시스코에서 컬럼비아 대학교 동문들이 만들었습니다

Lena: Hey Miles, I just read something that completely flipped my understanding of climate migration. We always hear about mass movements of people fleeing rising seas and droughts, but here's the kicker—the actual projections for how many people will migrate differ by two orders of magnitude. We're talking about estimates ranging from hundreds of thousands to hundreds of millions of people.
Miles: That's incredible, Lena. And what's even more striking is that for internal migration—people moving within their own countries—some models predict massive increases while others suggest climate change will actually reduce migration. We literally can't agree on the direction of the effect, let alone the scale.
Lena: Right! It's like we're trying to plan for a future we can't even measure. And here's what really caught my attention—most of these models have never been tested against historical data to see if they can actually explain past migration patterns.
Miles: Exactly. So we're making projections about the future using models that haven't proven they can explain the past. That's a fundamental problem in how we're approaching this whole question. Let's dive into why these projections are so wildly different and what that means for policy.