Your favorite band is great at playing musicbut not so great at being organized. They keep misplacing their instruments on tour, and it's driving their manager mad. Can you solve the brain-numbing riddle their manager assigns them and...

The human lifespan might be limited, in part, because natural selection just stops working late in life.

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Mortality plateau: the...

Studies suggest that if you made full-body scans part of your regular routine, you’d find a bunch of cancers over the years, but it wouldn't change your odds of having a life-threatening cancer. This is mostly because our definition of...

Is personalized medicine for individual bodies in our future? Possibly -- with the use of stem cells, undifferentiated cells with the power to become any tissue in our bodies. Craig A. Kohn describes the role of these incredible,...

We all know turtles live an amazingly long time, but what's their secret? And can we apply it to humans?

By analyzing survivorship curves over the centuries, we can learn what’s changed about how - and when - humans die.

What if immortality wasn't just the stuff of epic comic book stories? Is it scientifically possible to be immortal? In this series, Joy Lin tackles six superpowers and reveals just how scientifically realistic they can be to us mere...

Our month-long exploration of human reproduction continues with a look at testicular anatomy, the steps of sperm production, and how it's influenced by gonadotropin and testosterone. Hank also explains how sperm mature, and how...

The laws of thermodynamics are cornerstones of physics - but one of them is more breakable than it appears.

The underworld is overcrowded, and Zeus has ordered Hades to let some spirits out. Hades arranges all the souls of the dead in a line before Cerberus. When one of his three heads bites down on the soul in front of it, they'll get...

We humans like to think we’re special in basically all ways, but if the history of life is any indication, our species has a limited time on this planet. So the question is: when are we gonna go extinct?

What if every home had an early-warning cancer detection system? Researcher Joshua Smith is developing a nanobiotechnology "cancer alarm" that scans for traces of disease in the form of special biomarkers called exosomes. In this...

Why Do We Have More Boys Than Girls

You've know that the Kepler Space Telescope has discovered HUNDREDS of new planets outside our solar system -- but how does it find them? And how do scientists tell the real planets from the celestial fake-outs? It involves a lot of...

Paul Andersen shows you how to solve simple Hardy-Weinberg problems. He starts with a brief description of a gene pool and shows you how the formula is derived. He then shows you how to solve a couple of sample problems.

Paul Andersen shows you how to use the rules of multiplication and addition to correctly solve genetics problems. The rule of multiplication can be applied to independent events in sequence. The rule of addition can be applied to...

Looking around, you might think it’s obvious that the abundance of screens and social media are ruining our lives, but what does the research actually tell us?

Pregnancy can be a scary time for many reasons, one of which is having so many things feel off-limits for the safety of the fetus. But what about vaccines? Especially the Covid-19 vaccine? To understand the answer to this question you...

Howcast - Learn how to play roulette in Las Vegas from Sin City expert Mike Myers in this Howcast video.

Howcast - Although some common health problems affect both men and women equally, some illnesses occur only or most often in men. Be aware, recognize the risk factors, and change your lifestyle to improve your odds of preventing a few...

Howcast - Learn how to make lay bets in this Howcast video about playing craps.

Howcast - Learn how to make buy bets in this Howcast video about playing craps.

Howcast - Learn how to make a come bet or a don't come bet in this Howcast video about playing craps.

Howcast - Learn how to make a free odds bet in this Howcast video about how to play craps.