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The two faces of depression

  Depression is telling us there is some major thing in our lives we must change.

Bees do not really understand zero

  Scientists in Australia have claimed that honey bees under­stand the concept of zero.

Mister Spock in an intimate moment with a robot
Emotions are essential for a conscious AI

Sexbots tell us that robots will never be really conscious until they get the capacity for emotion.

Trees in winter
Cake Explosions, Part 2

  The 21st century could be remembered as the era when the government began telling us what we must say.

Invisible aircraft carrier
Invisible aircraft carriers

Future wars will be fought by invisible soldiers on invisible ships launching invisible missiles at targets they can't see.

America is drifting away from basic research

  Pressure for funding is making NIH grants all about clinical trials. And that's bad

Green lava
The multiverse may be all around us

A new theory in physics shows surprising connections to Lewis's idea of modal realism

On chasing hats and the reality of the world

  We may be programmed to think there are limits to what can be understood.

Beta amyloid 1-42 3D model
The theory that just won't die

  Beta-amyloid has been studied for 30 years, and we are no closer to a cure.

Square earth
Science under siege,
part 5

  A reproducibility crisis, you say? Talk to the hand.

Why are scientists such bad writers?

The softer the science, the longer the paper. Our third installment in how to write good

Chess pieces
Problems with linear regression

  First, a tedious statistical question. We'll fix the end of the world later


Sonogram of bird calls
The sound of freedom

  Technological sounds are drowning out the quiet music of nature.

Chess pieces brawling
Argumentation in a post-logical world

We must become more analytical in detecting and refuting hidden assumptions in the debate.

Lightning Atheism, Ducks and Bananas

Atheists and religious people both need to work on their sense of humor.

Barbed wire
Eight myths about libertarianism

  Libertarianism is not what many people think.

 science and medicine

Why is the speed of light not infinity?

  Wonky Minkowski diagrams, Rindler frames, and quantum foam, oh myyyy . . .

Protein molecule
The future of medicine

  In the future things will be ... uh, better ... mostly

Cold facts on global warming

  It's still important to understand what is and is not factual about the climate.

Protein molecule
Not your grandfather's theory of evolution

  Darwin's theory of natural selection has mutated almost beyond recognition.

Tinnitus: Causes and Treatment

Recent research suggests that tinnitus is easier to cure when treatment is given early. In this article, I will discuss what is known about tinnitus and what tinnitus sufferers can do about their affliction.

Cow fermions
Are superconductors holograms?

  A new idea from string theory finds holograms everywhere.

Bismuth, nature's most uninteresting element

  Seven incredibly boring facts about bismuth you will probably believe!


Solar eclipse
How to Photograph a Solar Eclipse

Without burning up your camera sensor, blinding yourself, and setting your dog on fire.

Star fields in Apollo 11 photographs

The claim that there are no stars in the moon landing images is examined.

UV picture of Pine cone
Shortwave ultraviolet photography

Photography at short UV wavelengths (200-300 nm) opens up a new universe.

Roof vents
How to take bad cell phone photos

Some tips on taking the worst travel photos ever.

Photographing Radioactivity with a Webcam

You can use a webcam to photograph radioactivity.

UV image of sparks
Ultraviolet photography

The ultraviolet world is gloomy ... and pink.

Infrared image of tree
Infrared photography

It's not difficult to modify a digital SLR camera to take pictures in the near-infrared.

Astrophotography Without a Telescope

You don't need a lot of equipment to take spectacular pictures of the stars.


Firefly biology and tips on photographing fireflies. Movie of fireflies flashing in synchrony.

Oslo lens graphs
Build an Ultraviolet Zoom Lens, Part 1: Design

Design and plans for a fused-silica zoom lens.

High-resolution compact spectrograph, Part 1

Design and plans for a compact spectrograph suitable for astronomy.

Swan Nebula

  A collection of astrophotographs.

  science humor and miscellaneous

The standard model of sock physics

Socks actually tell us a great deal about quantum mechanics. Unfortunately, most of it is wrong.

Woodpecker How to Get Rid of Woodpeckers

  Do noise generators and reflector tape actually work?

Crystal cube The Prophecies of Bruce de Nostradamus

Bruce Nostradamus is not as famous as his older brother, partly because his quatrains were not very good.

Fundamentals of Reindeer Aerodynamics

How did reindeer evolve the ability to fly?