Zitat des Tages von Richard Preston:
I think we sometimes give ourselves a little too much credit as humans, as being able to control and understand nature, when in fact we do neither.
Global climate change has become entangled with the problem of invasive species. A warmer climate could allow some invaders to spread farther, while causing native organisms to go extinct in their traditional habitats and making room for invaders.
The dragonfly is an exceptionally beautiful insect and a fierce carnivore. It has four wings that beat independently. This gives it an ability to maneuver in the air with superb dexterity. A dragonfly can put on a burst of speed, stop on a dime, hover, fly backward, and switch direction in a flash. This is a hunting behavior known as hawking.
We're creating these massive urban areas in the Third World. It's like you take the entire population of California and put it in one city. Then you remove basic sanitation and medical services, and you have a ticking biological time bomb.
I happen to love science... Scientists are all slightly mad. There is truth in the stereotype of the mad scientist. They are mad with curiosity.
The crown of a supertall redwood has a towering, cloudy, irregular form, and the crowns of the tallest redwoods can sometimes look like the plume of exhaust from a rocket taking off.
There may be a little bit of finger-pointing - there always is in a situation like this - but I think of Ebola as an act of nature. It's the biological equivalent of a tsunami, and yes, we are having trouble handling it.
When you get up into the crown of a redwood tree, you lose sight of the ground entirely. You also lose sight of the sky. And you're in a lost world. You're in an undiscovered, unexplored ecosystem, somewhere between Heaven and Earth, filled with forms of life, not all of which have been given names by scientists yet.
If a portion of a redwood is rotting, the redwood will send roots into its own form and draw nutrients out of itself as it falls apart. If we had redwood-like biology, if we got a touch of gangrene in our arm, then we could just, you know, extract the nutrients and the moisture out of it until it fell off.
Experiments suggest that if one particle of Ebola enters a person's bloodstream, it can cause a fatal infection. This may explain why many of the medical workers who came down with Ebola couldn't remember making any mistakes that might have exposed them.
The seeds of a redwood are released from cones that are about the size of olives. The heartwood of the tree is a dark, shimmery red in color, like old claret. The wood has a lemony scent and is extremely resistant to rot.
Here's what's terrifying about Ebola. Ebola is invisible. It's a monster without a face. With the science that we have now, we can perceive Ebola as being not one thing but as a swarm, and the swarm is moving through the human population and expanding its numbers. It has the qualities of a monster.
The problem with Ebola is that it makes mistakes while it copies itself. The mistakes are actually good for Ebola because they help Ebola change, and as a result of this, as it jumps from one human body to the next, roughly half the time, it's got a mutation.
The annual flight of the dragonflies goes mostly unnoticed, though it is one of the great migrations of flying creatures that occur across North America.
An Ebola particle is only around eighty nanometres wide and a thousand nanometres long. If it were the size of a piece of spaghetti, then a human hair would be about twelve feet in diameter and would resemble the trunk of a giant redwood tree.
