menu_open Columnists
Chris Kirkland

Chris Kirkland

The Conversation

We use cookies to provide some features and experiences in QOSHE

More information  .  Close

Tiny crystals in Earth’s crust have captured the movement of the Milky Way’s spiral arms

The findings suggest Earth’s geological story was partly written in the stars – specifically, in the spiral arms of our home galaxy.

17.09.2025 6

The Conversation

Chris Kirkland

1 billion years ago, a meteorite struck Scotland and influenced life on Earth

The microbes living here were dramatically disrupted – and the future of life on Earth changed.

29.04.2025 10

The Conversation

Chris Kirkland

Giant glaciers pulverised Earth’s ancient rocks, setting the stage for complex life

Hundreds of millions of years ago, rocks crushed under kilometres of ice injected vital nutrients into Earth’s oceans.

26.02.2025 9

The Conversation

Chris Kirkland