Mostrando entradas de septiembre, 2015
Francisco Hernández
En
Salud y cuerpo humano
Caliginofobia... el miedo a las mujeres hermosas
Caliginofobia: Condición caracterizada por un persistente, anormal e incontrolable miedo a las mujeres hermosas. Deb…
Francisco Hernández
En
Salud y cuerpo humano
Does a human heart have a finite number of beats?
Yes. At an average of 80 beats per minute, most of us will manage less than four billion beats in our lives. But you don…
Francisco Hernández
En
Salud y cuerpo humano
Why do we have wisdom teeth?
We evolved from hominids that had longer jaws for chewing raw meat and plants. Extra molars are an advantage, but they d…
Francisco Hernández
En
Salud y cuerpo humano
Why do we cover our mouths when startled or shocked?
Not to prevent our souls leaving our bodies, as some traditions would have it. The gasp which causes our mouths to open…
Francisco Hernández
En
Planeta Tierra
What caused the Big Bang?
The big bang is the moment that space and time (or ‘spacetime’) came into existence. Before the Big Bang there was no sp…
Francisco Hernández
En
Salud y cuerpo humano
Why don’t we sneeze in our sleep?
During REM sleep (the phase where dreams take place), your muscles are paralysed so that you don’t thrash around and hur…
Francisco Hernández
En
Planeta Tierra
How big could an animal get?
Based purely on the physical strength of bone and muscle, it has been calculated that land animals of at least 100 tonne…
Francisco Hernández
En
Planeta Tierra
Can stars collide?
In general, distances between stars are so vast that it is unlikely that any two will ever meet and collide. But in some…
Francisco Hernández
En
Curiosidades
El árbol de 40 frutos
Mediante una técnica de injertos, un profesor de arte consiguió que un mismo árbol produzca 40 tipos distintos de frutas…
Francisco Hernández
En
Curiosidades