Ever wondered how to milk a spider? In this archival video from 2007, Dr. Greta Binford, a researcher at Lewis and Clark College in Portland, Oregon, extracts venom from a sleeping spider's fangs.
Video courtesy of Dr. Greta Binford and Vanessa Fawbush

Ask a child with an imaginary companion if their pretend friend is real, and often they'll tell you, "I just made them up!" Of course, moments later they'll regale you with stories of the latest adventures with their companion with the utmost conviction. In the second episode of The Real Guide to Imaginary Companions, a trip into the lab of developmental psychologist Jaqueline Woolley reveals how children can become so enamored of their pretend friends that they blur the lines between reality and fantasy. Woolley also investigates whether a child's orientation toward fantasy play has ties to real-world creativity.
Produced by Science Friday with generous support from the John Templeton Foundation
Produced, directed, and narrated by Luke Groskin
Filmed by Katie Graham, Luke Groskin and Patrick Pelham
Editor by Erika Sutter
Animations by Gabe Darling and Candice Aquino
Music by Audio Network
"Fairy Godmother" voiced by Annie Nero
Additional footage provided by
Pond5.com, A Lost World (1925), Rudolph the Red-Nosed Reindeer,
Special Thanks to Danielle Dana, Jennifer Fenwick, Becky Geer, Tracy Gleason, Elizabeth Delucia Landon, Alex Riviello, Jenny Shalant, Christian Skotte, Marjorie Taylor, and Jacqueline Woolley.

Creating the scintillating scents and sensations of a perfume presents a lesson in molecular chemistry and craftwork. With the help of the Institute of Art and Olfaction, we'll take you on tour of how perfumes are made and how they can be creatively scattered for artistic means.

Scientists are experimenting with pumping CO2 deep beneath the sea floor. See the borehole where they practice.

A hawk moth (Manduca sexta) feeds by hovering in front of flowers and slurping nectar through a proboscis, basically a body-length straw. To understand how these moths keep such a precise position in the air, Tyson Hedrick, a biomechanist at the University of North Carolina at Chapel Hill, tried destabilizing moths in a variety of different ways and tracked their responses using high speed cameras.

Get a tour of General Motor's new concept car--the Chevy Volt. Plus Dinah Shore singing Chevy's praises.

We had the VP on the radio show that week too (April 6) along with some other green car experts. Lively show - you can listen here: http://www.sciencefriday.com/p....ages/2007/Apr/hour2_

Behold lighting bugs of a different color! SciFri listener Chris Lavin stumbled upon fluorescing blue millipedes during an evening stroll near her home in Canyon, California and sent along video documentation. Glowing-millipede specialist Paul Marek, an entomologist at the University of Arizona, identified the millipedes, and explained what's known about their mysterious glow.

http://www.sciencefriday.com
Science Friday attended the 2014 Sundance Film Festival and had a conversation with Shosh Shlam and Hilla Medalia, the directors of the feature documentary film, "Web Junkie." Their film follows several teenage boys in a Chinese "Internet addiction" rehabilitation camp.
"Web Junkie" directed by Shosh Shlam and Hilla Medalia.
All footage from Web Junkie © Dogwoof Global.
Produced by Annie Minoff
Interview filmed by Manjula Varghese
Edited by Luke Groskin

Go into the NPR studio and find out about new types of green packaging, including--bags made of bottles, paper from rocks and plastic from corn

Participate in our survey! We'll analyze the results in future episodes! (individual data will be kept anonymous). https://bit.ly/2J1zimn
Today we’re going to talk about good and bad surveys. From user feedback surveys, telephone polls, and those questionnaires at your doctors office, surveys are everywhere, but with their ease to create and distribute, they're also susceptible to bias and error. So today we’re going to talk about how to identify good and bad survey questions, and how groups (or samples) are selected to represent the entire population since it's often just not feasible to ask everyone.

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Mark Brouwer, Justin Zingsheim, Nickie Miskell Jr., Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, Robert Kunz, SR Foxley, Sam Ferguson, Yasenia Cruz, Daniel Baulig, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, Alexander Tamas, D.A. Noe, Shawn Arnold, mark austin, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters,, Sandra Aft, Steve Marshall
--

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Take the 2017 PBS Digital Studios Survey: http://surveymonkey.com/r/pbsds2017. Today we’re going to take our first baby steps from hardware into software! Using that CPU we built last episode we’re going to run some instructions and walk you through how a program operates on the machine level. We'll show you how different programs can be used to perform different tasks, and how software can unlock new capabilities that aren't built into the hardware. This episode, like the last is pretty complicated, but don’t worry - as we move forward into programming the idea of opcodes, addresses, and registers at this machine level will be abstracted away like many of the concepts in this series.

Want to know more about the Intel 4004? You can read the manual here! http://bitsavers.trailing-edge.....com/pdf/intel/MCS4/

Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

The Latest from PBS Digital Studios: https://www.youtube.com/playli....st?list=PL1mtdjDVOoO

We’ve got merch!
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Want to know more about Carrie Anne?
https://about.me/carrieannephilbin

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We’ve explored the origins of modern biology, the earth sciences, and even the sciences of outer space. Now it’s time to put these disciplines together. It's Ecology time!!!

***

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Eric Prestemon, Sam Buck, Mark Brouwer, Bob Doye, Jennifer Killen, Naman Goel, Patrick Wiener II, Nathan Catchings, Efrain R. Pedroza, Brandon Westmoreland, dorsey, Indika Siriwardena, James Hughes, Kenneth F Penttinen, Trevin Beattie, Satya Ridhima Parvathaneni, Erika & Alexa Saur, Glenn Elliott, Justin Zingsheim, Jessica Wode, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Brian Thomas Gossett, Khaled El Shalakany, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, D.A. Noe, Shawn Arnold, Malcolm Callis, Advait Shinde, William McGraw, Andrei Krishkevich, Rachel Bright, Jirat, Ian Dundore
--

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We’ve talked a lot in this series about how often you see data and statistics in the news and on social media - which is ALL THE TIME! But how do you know who and what you can trust? Today, we’re going to talk about how we, as consumers, can spot flawed studies, sensationalized articles, and just plain poor reporting. And this isn’t to say that all science articles you read on facebook or in magazines are wrong, but that it's valuable to read those catchy headlines with some skepticism.

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Mark Brouwer, Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, Robert Kunz, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, Alexander Tamas, D.A. Noe, Shawn Arnold, mark austin, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters, Sandra Aft, Steve Marshall
--

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Engineering, like life, could really use a lot more cheese. This week we are looking at a cheese factory in Toronto and what it can teach us about process control systems. We’ll explore feedforward and feedback systems, and see how integrating them both with the final check of cascade control creates a system made to handle uncertainty the world throws its way.

Crash Course Engineering is produced in association with PBS Digital Studios: https://www.youtube.com/playli....st?list=PL1mtdjDVOoO

Global Weirding with Katharine Hayhoe: https://www.youtube.com/channe....l/UCi6RkdaEqgRVKi3Az

***

RESOURCES:
https://www.improbable.com/201....8/01/10/the-100th-bi
http://www.abc.net.au/science/....k2/trek/4wd/crasht.h
http://www.proflow.ca/case-stu....dies/process-control
https://www.explainthatstuff.c....om/howtoiletswork.ht
https://www.marineinsight.com/....tech/heat-exchangers
https://www.controleng.com/sin....gle-article/applying

***

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Sam Buck, Mark Brouwer, James Hughes, Kenneth F Penttinen, Trevin Beattie, Satya Ridhima Parvathaneni, Erika & Alexa Saur, Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, D.A. Noe, Shawn Arnold, Malcolm Callis, Advait Shinde, William McGraw, Andrei Krishkevich, Rachel Bright, Mayumi Maeda, Kathy & Tim Philip, Jirat, Ian Dundore
--

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Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use

Somos una comunidad especializada en rescatar material del recuerdo.

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Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use

Somos una comunidad especializada en rescatar material del recuerdo.

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Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use

Somos una comunidad especializada en rescatar material del recuerdo.

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Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use

Somos una comunidad especializada en rescatar material del recuerdo.

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Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use

Somos una comunidad especializada en rescatar material del recuerdo.

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Copyright Disclaimer Under Section 107 of the Copyright Act 1976, allowance is made for "fair use" for purposes such as criticism, comment, news reporting, teaching, scholarship, and research. Fair use is a use permitted by copyright statute that might otherwise be infringing. Non-profit, educational or personal use tips the balance in favor of fair use