All the evidence points to Darwin as a generally healthy man with a strong, active libido, normal sexual function, and prodigious fertility.
In my new contribution, I restrict myself to important facets of the historical side of plant gall research.
It pleased me to find out that his reading of my book was one of the major influences that motivated him to take up the fight.
The Fibonacci spirals in plants have long attracted scientists and puzzled them as well. How do they form?
Despite the notoriety of Wallace in his own day, he remains a comparatively obscure figure in the history of biology.