If we look at the early fetal stage of different species, we'd notice that most of them started out the same, and the closer one species is related to another, the more similarities they have between them. Now if we were to take this on an evolutionary level, stretching back millions of years, can we see a period where both species are essentially the same?

Considering that all life on Earth are related to one another, the consequences might be surprising.

Metalworking and fire seems to go so naturally that we have taken the science behind it for granted. But there is so much more between the interactions of heat and metals than mere melting, casting and shaping. This relation goes deep into the molecular realm, of how the alignments of particles can make or break the structure.

And when the structure supports bridges, buildings, or vehicles, it's certainly worth it to know more.

Pi is one of those constants in the mathematical world. And because of that, it often appears in nature, particularly any that involves curves and ​spirals. But it would be too easy to derive pi from those very things - they are ordered, unchanging, predictable.

But what if pi can be derived from a series of improbable, unpredictable actions?

Nature can be a cruel mistress. The combination of chance, accidents, and selection had shaped this world and its inhabitants for eons. If something ceased to exist (not by our doing) would it be well for us to bring it back? Or would it be playing God for us to interfere in the course of nature? 

Keith McLachlan parallels this conundrum in his story.

Nuclear chemistry is a field that straddles both physics and chemistry. This holds no surprise as chemistry is, in a way, a subset of applied physics. Therefore things that are usually linked to physics (radiation, and subatomic particles) can and will affect things we interact with in our lives - thing that are ultimately chemicals.

Just don't press your luck on becoming the Incredible Hulk.