The Unbroken Thread (ft. Attenborough, Goodall, Sagan)
[David Attenborough]
All life is related
And it enables us to construct with confidence
The complex tree that represents the history of life
Our planet, the Earth, is as far as we know
Unique in the universe; it contains life
Here plants and animals proliferate in such numbers
That we still have not even named all the different species
Darwin's great insight revolutionized the way in which we see the world
We now understand why there are so many different species
[Carl Sagan]
Every cell is a triumph of natural selection
And we're made of trillions of cells (Within us is a little universe)
Those are some of the things that molecules do
Given four billions years of evolution (We are, each of us, a multitude)
Now how did the molecules of life arise?
[Attenborough]
It began in the sea
Some 3 thousand million years ago
Complex chemical molecules began to clump together
These were the "seeds"
From which the tree of life developed
They were able to split, replicating themselves
As bacteria do
[Sagan]
The secrets of evolution
Are time and death
There's an unbroken thread that stretches
From those first cells to us
(refrain)
[Jane Goodall]
There isn't a sharp line dividing humans
from the rest of the animal kingdom
It's a very wuzzie line
It's a very wuzzie line,
and it's getting wuzzier
All the time
We find animals doing things that we,
In our arrogance,
Used to think was "just human"
(refrain)
[Attenborough]
Its continued survival now rests in our hands
El Hilo Inquebrantable (ft. Attenborough, Goodall, Sagan)
[David Attenborough]
Toda la vida está relacionada
Y nos permite construir con confianza
El complejo árbol que representa la historia de la vida
Nuestro planeta, la Tierra, es hasta donde sabemos
Único en el universo; contiene vida
Aquí las plantas y animales proliferan en tal cantidad
Que aún no hemos nombrado todas las especies diferentes
La gran visión de Darwin revolucionó la forma en que vemos el mundo
Ahora entendemos por qué hay tantas especies diferentes
[Carl Sagan]
Cada célula es un triunfo de la selección natural
Y estamos hechos de billones de células (Dentro de nosotros hay un pequeño universo)
Esas son algunas de las cosas que hacen las moléculas
Dadas cuatro mil millones de años de evolución (Somos, cada uno de nosotros, una multitud)
¿Cómo surgieron las moléculas de la vida?
[Attenborough]
Comenzó en el mar
Hace unos 3 mil millones de años
Complejas moléculas químicas comenzaron a agruparse
Estas eran las