The process of speciation is completed with the cessation of genetic exchange.

I really liked insects - all kinds: flies, grasshoppers, weevils.

Since my high school years, I have been interested in history, especially in Roman history, a topic on which I have read rather extensively. The Latin that goes with this kind of interest proved...

Formation of a new race takes place when, over several generations, individuals in one group reproduce more frequently among themselves than they do with individuals in other groups.

In bodies, a movement anywhere will send out a wave of response through the structure: the whole body participates, and the better organized it is around the skeletal core, the more clearly it...

The tendency to variation in living beings, which all admitted as a matter of fact; the selective influence of conditions, which no one could deny to be a matter of fact, when his attention was drawn...

It's my conceit that perhaps some diseases perceived as diseases that destroy a well-functioning machine actually turn it into a new but still well-functioning machine with a different purpose. The...

Suddenly I realized that a cell's life is controlled by the physical and energetic environment and not by its genes. Genes are simply molecular blueprints used in the construction of cells, tissues,...

Masturbation and meditation both promote physical and mental wellbeing.

The complex organic device that creates and thereafter drives consciousness, is the human brain. Consciousness evolved hand in hand with the evolution of the human brain throughout a time span of six...

Natural Sciences are all about fascinating causality.

Consequently, immune systems at this level can be defined a priori as embodied expectations of injury and the corresponding programmes of protection and repair.

The ribosomes, for instance, which manufacture proteins, rival in complexity any chemical factory. The mitochondria are power plants which extract energy from food by a complicated chain of chemical...

The biology of empathy allows us to comprehend our connection to each other, to other living things, and to the physical world that supports life.

Giraffe gestation is about thirteen to fifteen months.

Plants are nature's alchemists, expert at transforming water, soil and sunlight into an array of precious substances, many of them beyond the ability of human beings to conceive, much less...

If a potato can produce vitamin C, why can't we? Within the animal kingdom only humans and guinea pigs are unable to synthesize vitamin C in their own bodies. Why us and guinea pigs? No point asking....

I circumnavigate each cell in you Your merest molecule is right and true Look there for destinies indelible and fine And rare. Ten thousand futures share your blood each instant; Each drop of blood a...

Marian's eyes absolutely blaze. To meet them is to have a shock of contact as if they were electrically charged. Now you see? You wondered what was in whale's milk. Don't you know now? The same thing...