Human chimera with two different colored eyes.

Human Chimeras

Human chimeras are surprisingly common and a wonder of the human reproductive process.
Bergonic chair for giving general electric treatment for psychological effect, in psycho-neurotic cases. World War 1 era.

Why Electroshock Therapy Isn’t Bad for You

Electroconvulsive therapy, or electroshock, has a bad reputation, but medically its efficacy is well documented, even if nobody knows how it works.
Ebola virus

Is a Virus Alive?

The answer to the question whether a virus is alive isn't so simple.

Do Tall People Have a Higher Risk of Cancer?

We review the research on the correlation between height and cancer risk.
The Brain That Wouldn't Die - 1962 - Joseph Green

Head Transplants: A History

The first human head transplant is scheduled for 2017. But the possibility of transplants has transfixed scientists for most of the last century.

What Causes Brain Freeze AKA Ice Cream Headaches?

Brain freeze, or the ice cream headache, is still little understood.

Aphantasia: When the Mind’s Eye is Blind

Those suffering from aphantasia cannot form mental images. Which begs the question: What exactly do we mean when we say mental image?

Take a Nap, It’s Good For You

Like taking a nap? Exploring the research that finds a positive correlation between health and a short daily rest.
AFP/Getty Images

Hand to Ankle: A New Grafting Technique Offers Hope

The surgical reattachment or grafting of limbs has a short history because of its difficulty.

Will Spicy Foods Preserve You?

Spicy foods may prolong life; they certainly act as food preservatives.