Electrolytically refined pure (99.989 %) superficially oxidized lead nodules and a high purity (99.989 %) 1 cm3 lead cube for comparison.

Lead: Our Four-Thousand Year Old Pollutant

The history of lead pollution goes back 4000 years.
Bleached wart coral

The Global Coral Bleaching Event

We look at the current global coral bleaching event, possibly the worst in recorded history.
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.
A couple with a tall man and a shorter woman

Do Tall People Have a Higher Risk of Cancer?

We review the research on the correlation between height and cancer risk.
Holotype of Diplazium grammatoides Fée; Verified by George R. Proctor, 1985/10

Botanist and Murderer? The Strange End of George R. Proctor

The obituary of noted botanist George R. Proctor reveals a surprising story.
Bacteria

Protecting Mars From Earthly Contaminates

Now that water has been discovered on Mars, the next step is to ensure we don't contaminate the planet with Earthly microbes and bacteria.
Fire

Fire Season is Getting Longer and Longer

A look at how climate change and human influences are changing the dynamics of fire, and the landscape, in the American west.