Posts Tagged ‘earth’

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We’re Underestimating the Risk of Human Extinction

March 31, 2012

Unthinkable as it may be, humanity, every last person, could someday be wiped from the face of the Earth. We have learned to worry about asteroids and supervolcanoes, but the more-likely scenario, according to Nick Bostrom, a professor of philosophy at Oxford, is that we humans will destroy ourselves.

Bostrom, who directs Oxford’s Future of Humanity Institute, has argued over the course of several papers that human extinction risks are poorly understood and, worse still, severely underestimated by society. Some of these existential risks are fairly well known, especially the natural ones. But others are obscure or even exotic. Most worrying to Bostrom is the subset of existential risks that arise from human technology, a subset that he expects to grow in number and potency over the next century.

Despite his concerns about the risks posed to humans by technological progress, Bostrom is no luddite. In fact, he is a longtime advocate of transhumanism—the effort to improve the human condition, and even human nature itself, through technological means. In the long run he sees technology as a bridge, a bridge we humans must cross with great care, in order to reach new and better modes of being. In his work, Bostrom uses the tools of philosophy and mathematics, in particular probability theory, to try and determine how we as a species might achieve this safe passage. What follows is my conversation with Bostrom about some of the most interesting and worrying existential risks that humanity might encounter in the decades and centuries to come, and about what we can do to make sure we outlast them.

Excerpt of an article by Ross Andersen at The Atlantic. Continue HERE

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The Gnome Experiment

March 24, 2012

Gravity varies slightly, wherever you go. So can we measure this phenomenon with a set of Kern scales and our traveling assistant? Watch the film or explore the results so far.

Aim

If Earth was a perfect sphere of uniform density, then gravity would be consistent. But it’s not, which means gravity varies wherever you go. So can we chart those discrepancies using just a basic-range Kern scale?

Method

We’re shipping our Gnome Kit from scientist to scientist around the world. Join the experiment and you’ll receive:

1x Kern EWB 2.4 Scale
Pre-calibrated according to local gravity at Kern HQ, Balingen, Germany.

1x Kern Gnome
The perfect test-subject for two good reasons: Gnomes are already accustomed to traveling the world. They also originate from our homeland, Germany.

1x Lab gloves & 1 x Air duster
Important because dust or grease will reduce the accuracy of the results.

http://gnomeexperiment.com/

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ASTRONOMICAL: On the Revolutions of the Celestial Spheres

January 30, 2012

A scale model of our solar system in twelve 500 page volumes printed-on-demand. On page 1 the Sun, on page 6,000 Pluto. The width of each page equals one million kilometers.

This film takes us through the first volume where we encounter the Sun, Mercury, Venus, Earth, Mars and the Asteroid Belt.

Order the set from mishkahenner.com

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The new question: Should we terraform Mars?

January 3, 2012

Artist’s conception of a terraformed Mars. Credit: Wikimedia Commons

Paul Scott Anderson at Universe Today: As “we” continue to explore farther out into our solar system and beyond, the question of habitation or colonization inevitably comes up. Manned bases on the Moon or Mars for example, have long been a dream of many. There is a natural desire to explore as far as we can go, and also to extend humanity’s presence on a permanent or at least semi-permanent basis. In order to do this, however, it is necessary to adapt to different extreme environments. On the Moon for example, a colony must be self-sustaining and protect its inhabitants from the airless, harsh environment outside.

Mars, though, is different. While future bases could adapt to the Martian environment as well, there is also the possibility of modifying the surrounding environment instead of just co-existing with it. This is the process of terraforming – essentially trying to tinker with Mars’ atmosphere and environment to make it more Earth-like. Although still a long ways off technologically, terraforming the Red Planet is seen as a future possibility. Perhaps the bigger question is, should we? Continue HERE