Lasers From a Plane Just Counted Six Million Trees in the Scottish Highlands

A light aircraft flew over the Scottish Highlands with a laser system on board, and what it found beneath the clouds is the kind of climate news that rarely makes headlines. Cambridge researchers used LiDAR technology paired with AI to survey 569 square kilometres of Cairngorms National Park. The result: six million trees, all counted from the sky.

The detail that matters most? More than 2.65 million of those trees are young, newly growing forests. They’re taking root on land that has weathered wildfire, overuse, and the pressures of a changing climate. In other words, nature is restoring itself at a scale that researchers are calling a breakthrough for monitoring restoration across entire landscapes. The Cairngorms Connect partnership behind the effort is thinking in centuries, not seasons, with a 200-year vision for the area.

There’s a surprising wrinkle too. The new trees are thriving more readily in dry ground than in wet, boggy soil, which flips some conventional wisdom about where reforestation works best. It’s a reminder that nature keeps its own playbook. So, here’s a question worth sitting with: if a 200-year plan started today in your hometown, what would you want it to look like?