What 22,000 Years of Climate Data Just Revealed About Our Future

Growing up in Barcelona, I thought a lot about deep time. I was surrounded by it: by old stones, dry hills, and a landscape that hinted at stories millions of years in the making.

Later, when I was deep into my PhD, I found myself crouching beside a dried-out riverbed in the Australian outback, holding a chunk of ancient mud and wondering what it could still tell us about the world we live in now.

That moment stuck. It’s one thing to study the past, but another to feel it. And it’s something I’ve chased ever since: how the climate shifted, how ecosystems responded, and what those lessons can teach us today as we try to prepare for what’s coming.

But to do that work well, you need the right data. Not just the kind that covers continents, but the kind that speaks to the shape of a valley, the curve of a hillside, or the shadow of a mountain. That kind of data is rare. Which is why this new work from a team in southern Spain caught my eye and, honestly, made me a little bit excited.