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Generation Ships

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From: Isaac Arthur
Duration: 30:00

Use my link http://www.audible.com/isaac or text "ISAAC" to 500-500 to get a free book including a copy of "Rendevous with Rama" and a 30-day free trial of Audible.
Today we will begin our look at the spaceships we might use for colonizing interstellar space in the future. In order to cover the vast distances between even the nearest stars in our galaxy within the boundaries of known physics, we need vessels able to voyage at high speeds for very long periods of time while carrying everything they need to colonize another solar system, a concept typically known as a space ark or generation ship. We will explore the challenges and options for such a vessel, as well as some alternative approaches to the problem.

"The World, The Flesh And The Devil" by J.d. Bernal:
https://archive.org/details/in.ernet.dli.2015.171486

Visit our Website: http://www.isaacarthur.net
Support us on Patreon: https://www.patreon.com/IsaacArthur
SFIA Merchandise available: http://signil.com/sfia

Social Media:
Facebook Group: https://www.facebook.com/groups/1583992725237264/
Reddit: https://www.reddit.com/r/IsaacArthur/
Twitter: https://twitter.com/Isaac_A_Arthur on Twitter and RT our future content.
SFIA Discord Server: https://discord.gg/v5UKTsz

Listen or Download the audio of this episode from Soundcloud: Episode's Audio-only version:
https://soundcloud.com/isaac-arthur-148927746/generation-ships
Episode's Narration-only version: https://soundcloud.com/isaac-arthur-148927746/generation-ships-narration-only

Credits:
Generation Ships
142, Season 4 Episode 27

Writers
Isaac Arthur

Editors
A.T. Long
Darius Said
Evan Schultheis
Jerry Guern
Keith Blockus
Mark Warburton
Sigmund Kopperud

Producer
Isaac Arthur

Cover Artist:
Jakub Grygier https://www.artstation.com/jakub_grygier

Graphics Team:
Jarred Eagley
Jeremy Jozwik
Katie Byrne
Kristijan Tavcar
LegionTech Studios: https://hades9.com
Sam McNamara https://www.artstation.com/sboterod?fref=gc
Sergio Botero

Narrator:
Isaac Arthur

Music Manager:
Luca De Rosa - lucaderosa2@live.com

Music:
Markus Junnikkala, "Plotting a Course" https://www.markusjunnikkala.com/
Phase Shift, "Forest Night" https://www.last.fm/music/Phase+Shift/_/Enigmatic
Aerium, "The Islands moved while I was asleep" https://www.youtube.com/channel/UCRnUJY3l5vIJFGsY3XvW4dQ
Stellardrone, "Between the Rings" https://stellardrone.bandcamp.com
Denny Shneidemesser, "Constellations" https://soundcloud.com/denny-schneidemesser
Koalips, "Kvazar" http://freemusicarchive.org/music/Koalips/
Ayreon, "The Theory of Everything" https://www.youtube.com/channel/UCihO6uVisilu1mn4x2u-HOA

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mkalus
2 hours ago
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Cyclic Apocalypses

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From: Isaac Arthur
Duration: 31:14

A look at the possibility of future civilizations rising and falling.
Visit our sponsor: https://skl.sh/isaac
It's long been observed that empires tend to rise and fall in a seeming cycle, never identical but sharing many similarities. Today we will examine the idea that this may be the reason that we have encountered no advanced civilizations in our own galaxy, and that the solution the Fermi Paradox, as to why we have seen no alien civilizations, may be that they are caught in a perpetual loop. Unable or unwilling to use technology which might allow them to travel the cosmos. We will also consider if such a loop may await us, or that we are already in it.

Visit our Website: http://www.isaacarthur.net
Support us on Patreon: https://www.patreon.com/IsaacArthur
SFIA Merchandise available: http://signil.com/sfia

Social Media:
Facebook Group: https://www.facebook.com/groups/1583992725237264/
Reddit: https://www.reddit.com/r/IsaacArthur/
Twitter: https://twitter.com/Isaac_A_Arthur on Twitter and RT our future content.
SFIA Discord Server: https://discord.gg/v5UKTsz

Listen or Download the audio of this episode from Soundcloud: Episode's Audio-only version:
https://soundcloud.com/isaac-arthur-148927746/Cyclic-Apocalypses
Episode's Narration-only version: https://soundcloud.com/isaac-arthur-148927746/Cyclic-Apocalypses-narration-only

Credits:
The Fermi Paradox: Cyclic Apocalypses
Season 4, Episode 24

Writers:
Isaac Arthur

Editors
A.T. Long
Darius Said
Dillon Olander
Keith Blockus
Mark Warburton

Producer:
Isaac Arthur

Cover Artist:
Jakub Grygier https://www.artstation.com/jakub_grygier

Graphics Team:
Darth Biomech
Justin Dixon
LegionTech Studios https://hades9.com
Kristijan Tavar

Narrator:
Isaac Arthur - lucaderosa2@live.com

Music Manager:
Luca De Rosa

Music:
Miguel Johnson, "Attack on the Colonies" https://soundcloud.com/migueljohnsonmjmusic
Stellardrone, "A Moment Of Stillness" https://stellardrone.bandcamp.com
Kai Engel, "Endless Story About Sun and Moon" https://www.kai-engel.com/
Miguel Johnson, "The Endless Dark" https://soundcloud.com/migueljohnsonmjmusic
Markus Junnikkala, "Always Tell Me The Odds" https://www.markusjunnikkala.com/
Lombus, "Hydrogen Sonata" https://lombus.bandcamp.com
H.S. Crow, "Night King" https://www.hscrowofficial.com
Brandon Liew, "Into the Storm" https://www.youtube.com/watch?v=LQ2I19QUIXA

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2 hours ago
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The 2019 Ram 1500 Limited Is a $65,000 Ultra-Luxury Truck

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From: Doug DeMuro
Duration: 24:37

THANKS TO RAM OF ONTARIO: https://www.jcofontario.com/

The 2019 Ram 1500 is fully redesigned -- and the Ram 1500 Limited is the top-end luxury version. Today I review the 2019 Ram 1500 and show you the Ram 1500 Limited is among the most luxurious pickups you can buy.

FOLLOW ME!
Facebook - http://www.facebook.com/ddemuro
Twitter - http://www.twitter.com/dougdemuro
Instagram - http://www.instagram.com/dougdemuro

DOUGSCORE CHART: https://docs.google.com/spreadsheets/d/1KTArYwDWrn52fnc7B12KvjRb6nmcEaU6gXYehWfsZSo

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mkalus
2 hours ago
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Small Arms of WWI Primer 080: German MG08

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From: C&Rsenal
Duration: 1:27:28

Othais and Mae delve into the story of this WWI classic. Complete with history, function, and live fire demonstration.

C&Rsenal presents its WWI Primer series; covering the firearms of this historic conflict one at a time in honor of the centennial anniversary. Join us every other Tuesday!

Visit 3D Arsenal's website in progress: https://www.3darsenals.com/

Thank the South Carolina Military Museum: https://www.scmilitarymuseum.net/

Additional reading:

The Devil's Paintbrush (Sir Hiram Maxim's Gun)
Dolf L. Goldsmith & R. Blake Stevens

The Machine Gun Volume I
George M. Chinn

Safe range space thanks to Triana Protection

Additional photos thanks to Rock Island Auction

Ammunition data thanks to DrakeGmbH
https://www.youtube.com/user/DrakeGmbH/

Visit us at http://candrsenal.com

Or go further and support our channel at https://www.patreon.com/CandRsenal
Current funding level: $7,858

I would like to happily remind everyone this number represents the public demand for in depth firearm history. I'm proud to see it grow.

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mkalus
4 hours ago
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#WestShore #RCMP are responding to the West Shore Town Centre parking lot for a dog left in a vehicle while its owners view a movie. Dog is in distress and vomiting.

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#WestShore #RCMP are responding to the West Shore Town Centre parking lot for a dog left in a vehicle while its owners view a movie. Dog is in distress and vomiting.


Posted by ScanBC on Wednesday, July 18th, 2018 12:10am


97 likes, 76 retweets
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mkalus
5 hours ago
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Böse Schikane für Radfahrende auf der Tübinger Straße

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Wir wissen, die Fahrradstraße wird in Teilen in eine Autostraße umgewandelt. Es kommen zwei Ampeln hin, an denen auch Radfahrende warten müssen. Jetzt wurde auch noch eine Schikane auf den Radstreifen gebaut.

Diese Schwellen liegen genau quer zum Verlauf des Radstreifens. Sie zwingen Radfahrende zu einem jähen Schlenker nach links vor die Autokühler. Wer sie zu spät sieht, stürzt. Ich habe heute früh da schon einen Radler sturzgefährlich schlingern sehen. Es besteht zudem  Gefahr, dass Radfahrende zwischen Autos und den Schwellen eingeklemmt werden, entweder weil Autofahrer ihre Spur nicht halten, so wie dieser hier, oder weil sie versuchen, regelwidrig geradeaus zu fahren. Nachtrag Mittag: Da steht jetzt eine Ampel drin.  

Diese Schwellen samt Ampel dienen einzig und allein der Bändigung des Autoverkehrs, die Interessen der Radfahrenden, einschließlich ihrer Sicherheit fallen diesen Maßnahmen zum Opfer.

Eine Ampel samt Schwellen auf einem Radfahrstreifen sind ja typisch für Stuttgart. Hier gefährden sie Radfahrende und sie behindern sie auf ihrer Hauptradroute 1 über Gebühr. Stellt die Ampel doch rechts neben den Autofahrstreifen und lasst die Radler hier  rechts daneben geradeaus fahren. 
Situation am Morgen.

Geradeausradler brauchen hier keine Ampel, sie kreuzen keinerlei Autoverkehr. Sie könnten einfach weiterfahren. Sie hier halten zu lassen, ist Schikane. Außerdem fehlt noch die Geradeausfahrerlaubnis für Radfahrende.

Und für alle, die sich nach meinem gestrigen  Beitrag fragten, ob Radfahrende hier nicht einfach - Ampel hin oder her - geradeaus Richtung Marienplatz fahren dürfen müssten (sie behindern ja niemanden), ist das die Antwort. Die Schikane zwingt Radler, sich vor den Autos (falls die Platz lassen) auf den Aufstellflächen aufzustellen und ebenfalls auf Grün zu warten, obgleich sie nur geradeaus wollen und dabei keinen Autoverkehr queren.


Der Fahrradbeauftragte bemüht sich übrigens bereits bei der Verkehrsbehörde  darum, dass diese Schwellen wieder entfernt werden. Ihr könnt mit Gelben Karten helfen.

Nachtrag mittag: Ich fürchte, da jetzt die Ampel darin steht, wird alles vergeblich sein.

Wer die Facebookkommentare dazu lesen möchte, kann diesem Link folgen.
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