All engine running.

Absolutely genius.

Get this.

Welcome.

This is the show where we bring science.

What that essentially means is.

Discovery is,

the classes, research, technology, unbelievable.

Without further ado, this is the naked scientist.

Hello, welcome to the naked scientist.

This is the show where we talk to some of the biggest movers and shakers and

bring you the biggest stories from the world of science, technology and medicine.

I'm Chris Smith.

And today Titans of Science continues and we're joined by the body clock expert Russell Foster.

From Cambridge University's Institute of Continuing Education,

this is the naked scientists. Every organism on earth lives by some kind of clock. Our bodies are calibrated to the day-night

cycle of the area that we live in and processes like hormone release and brain function are attuned to the same periodic cycle.

But until recently we didn't really understand what drove this process.

That was, and to work by Russell Foster and his colleagues, discovered which specific cells

set the rhythm for the rest of our body. But before that, I began by asking him exactly what

a body clock is and how our understanding of it has evolved over time.

In the early days we really thought there was the body clock and there's a structure within the base of the brain called the supercosmatic nuclei and that structure was shown way back actually in the late 20s to be really important in generating 24-hour patterns of rest and activity.

...