Alco-pops and other pre-mixed alcoholic drinks are cause for concern in the community. A century back it was the strange absinthe that led the field in the social evil stakes. But Dr Karl reckons it's the same old problem.

As if blondes and redheads don't get enough stick, now they're apparently facing extinction! But Dr Karl isn't so sure and has gone searching for the roots of the story.

If you're only as old as you feel then are you as old as your body? The idea that body cells regrow every seven years should be an accurate guide, right? Wrong! Dr Karl can sense it in his bones.

Black cats have a reputation for bad omens, that's hocus-pocus and hard to prove. But white cats also present a riddle that Dr Karl found easier to solve.

If you've ever experienced severe back pain you'll know that it's no laughing matter. But according to Dr Karl one common complaint associated with a 'bad back' is a misnomer.

The habits of people choosing mealtime molluscs stick as tightly as a barnacle. Dr Karl applies some muscle power of his own to wrench open the facts.

The legend of Greenland's first colonies, and their demise due to ancient climate change, is widespread. But what truth is there to the tale? Dr Karl goes fishing for clues.

Many creatures have nocturnal navigation, but the bright city lights send some into a spin. Dr Karl fixes his gaze to find out why.

The prostate gland is little understood by most men. Why this is so is a matter Dr Karl can't quite put his finger on.

We are regularly encouraged to include a decent portion of fruit in our daily diet. But Dr Karl warns those on certain medications to choose their fruit...carefully.