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Dan Lewis
Works at Sesame Workshop
Attended Tufts University
Lives in New York
4,391 followers|31,571 views
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Dan Lewis

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Dan Lewis hung out with 1 person. #hangoutsonairKyle Bruley
Sesame Test 0327
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Dan Lewis

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Dan Lewis hung out with 1 person. #hangoutsonairJason Hoffmann
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Dan Lewis

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Hey, +Randall Munroe -- thanks for today's XKCD. (It's http://xkcd.com/1053/ for everyone else.)

I write http://NowIKnow.com, and I share lots of things which I find super-fascinating... and every once in a while, some [bad word deleted] will come by and say, "Oh, everyone knows that!" and unsubscribes. It upsets me at times, but now I'm just going to think "they're missing out on the fun."

(And by the way, the Yellowstone supervolcano is awesome and will make a for a great future Now I Know, thanks!)
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Don't give up - I know some of them, but it is always fun to read your articles!!  I'm a believer that good things will come for all the hard work done.
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Dan Lewis

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I just watched +Ted Berg spend seven minutes (including a lot of editing) making a sandwich... which I can't eat. And I may watch it again.
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1/2 stick of butter turned me off right away, reminds me of that southern porker couple from the Food Network.
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JUSTIN BIEBER ISN'T TRENDING!
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VOLDEMORT
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Dan Lewis

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In 1998, Jeff Bezos described the Kindle...

Yes, 1998.
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She never even stopped to apologize!
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5:27 and neither VOLDEMORT nor none of the Kardashians are trending. Mitt Romney is, as is Katy Perry. And #ShoesMonday which is kind of weird.
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Three questions about asteroid mining:

1) If it makes economic sense to mine asteroids that are in orbit, how long will it be before we come up with an economical way to get them into orbit? Like, use a depleted one as a space base and starting point for future go-out-and-grab expeditions.

2) Let's say you believe that the Earth's ecosystem is in a delicate balance and shouldn't be screwed with. Do you extend that to bringing in minerals from outer space? I mean:

(a) Does bringing in billions of dollars worth of platinum etc. from outside the Earth screw the Earth's balance up?

(b) Does removing this stuff from outer space screw up the Universe? the Galaxy? the Solar System? Etc.

3) We know so little about the depths of the Earth's oceans. Objectively speaking, do we know more about asteroids?
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1: We're more likely to move them into Lunar or Earth orbit for easier access and transport while we mine them, once depleted they would probably be easier to repurpose then it would be to de-orbit them. However governments might want to regulate that since asteroids in orbit could constitute kinetic energy weapons against the Earth, cf Robert A. Heinlein's The Moon is a Harsh Mistress.

2: Meteorites and extraterrestrial dust fall to Earth in the amount of tons daily, if I'm not mistaken. The Earth, however, actually has a negative daily mass budget because light gasses such as hydrogen and helium are constantly escaping from our atmosphere. The relatively small amount of materials we would be bringing in would make very little difference to those budgets and besides would be no more bioactive than the materials already here.

3: We know far more about asteroids than we do about the deep oceans for the simple reason that we can observe them much more easily! Heck, many of them conveniently plop down on our surface here for us to study! The deep oceans, on the other hand, are very hard to explore due to the vastly hostile environment.
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In his circles
203 people
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4,391 people
Jimmy Wales's profile photo
Education
  • Tufts University
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Male
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Occupation
Director, New Media Communications
Employment
  • Sesame Workshop
    Director, New Media Communications, present
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New York
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Connecticut
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