Category Archives: Medicine

How Painkillers Take the Edge Off

If only it were that simple.

Pain is essential to life, and not just in a Nietzschean, what-does-not-destroy-me-makes-me-stronger sense. It alerts us to injuries and prods us to stop poking at our wounds. It’s God’s megaphone, nature’s cone of shame. Pain is so essential, in fact, that losing our capacity for it can have life-threatening consequences.

Yet we’ve really only begun to understand how pain works in the past 40 years or so, thanks in large part to technological advances. Granted, most painkillers sport a list of side effects that reads like a Tomás de Torquemada’s own torture manual, but at least we understand something of the nervous mechanisms that underpin our owies. That said, just what on Earth is a COX inhibitor? Or an NSAID? And most important of all…

How do painkillers know where you hurt?

Nocturnal Commissions: Water Bowl v. Bladder Control

WaterfallWe’ve all heard stories of bedwetting brought about by placing a sleeper’s hand in a pan of warm water. Yet attempts at experimental confirmation have hardly been flush with success. Are the stories true? And if so, what urological or psychological mechanism is at work?

We spend years developing the ability to stay dry at night. Why not spend a few minutes reading about how easily it can be undone?

Will Putting People’s Hands in Warm Water Really Make Them Wet the Bed?

The Future: At the Corner of Close and Soon

Aerocar 600 fantasy flying car
Not quite what we had in mind.
(Photo by Joe Mabel)

Somehow the future we get is never quite the one we were promised. Then again, sometimes the very ideas wrapped in the pages of sci-fi and Popular Science are right under our noses, in disguise. After all, we have hand-held sensor-communicators and miraculous supermaterials – they just take the rather mundane form of carbon-fiber-wrapped smartphones.

Maybe our blindness arises from our physical and electronic architecture. Has exchanging Googie buildings for Google caused us to overlook the flying-car equivalents that fill our everyday lives, or soon will? Read on.

Our 10 Favorite Replacements for ‘Where’s My Flying Car?’

The Causation-Correlation Conflation

Not equal signThe question of cause  has haunted science and philosophy from their earliest days, in part because humans are wired for pattern-matching and confirmation bias. For all our supposed rationality, we confuse coincidence with correlation and correlation with causality.

Consequently, scientists must carefully design and control their experiments to remove bias, circular reasoning, self-fulfilling prophecies and hidden variables. They must respect the requirements and limitations of their methods, draw from representative samples and not overstate their results. Sometimes, however, that’s easier said than done. Read on to hear about…

10 Correlations that are Not Causations

How It’s Made: Crystal Edition

Photo by Alexander Van Driessche (note human for scale)

In physics, the term “crystal” designates a solid substance with internal symmetry and a related, regular surface pattern. But such a dry description cannot capture the intricacy and variety of materials found in snowflakes and crown jewels, or that power stereos and ultrasound machines, or that flavor our food. Nor can it convey the delicate dance of temperature, pressure and time that crystal growth requires.

Historically, growing crystals was as much art as science. Today, it requires precise technologies and technologies to control growth, often on a molecular scale.

How are crystals made?