What It Feels Like To Have a Stroke (And More About Your Brain)

From the TedTalks con­fer­ence. Fas­ci­nat­ing talk. Here’s a sum­ma­ry that intro­duces the clip below …

“Neu­roanatomist Jill Bolte Tay­lor had an oppor­tu­ni­ty few brain sci­en­tists would wish for: One morn­ing, she real­ized she was hav­ing a mas­sive stroke. As it hap­pened — as she felt her brain func­tions slip away one by one, speech, move­ment, under­stand­ing — she stud­ied and remem­bered every moment. This is a pow­er­ful sto­ry about how our brains define us and con­nect us to the world and to one anoth­er.” Added to our YouTube playlist.

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Learning Chemistry on YouTube

This is per­haps a first: A uni­ver­si­ty-spon­sored video col­lec­tion on YouTube that hangs togeth­er and con­tributes to devel­op­ing a larg­er body of knowl­edge. The Uni­ver­si­ty of Not­ting­ham has launched a chan­nel called The Peri­od­ic Table of Videos, which offers a video for each ele­ment on the peri­od­ic table. In total, you will find 118 videos, includ­ing the one below that gives you a clos­er look at Ura­ni­um. And, for the record, we’ve added this video set to our com­pi­la­tion: Intel­li­gent Life at YouTube: 70 Edu­ca­tion­al Video Col­lec­tions. Here it goes:

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Top 10 Amazing Physics Videos (Including Boomerang in Zero Gravity)

Wired Sci­ence gives you their favorites here. Below, we’ve post­ed a sam­ple: It’s called “Boomerang in Zero Grav­i­ty” and shows that, even in out­er space, a boomerang will always return to the per­son who threw it.

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500 KM Asteroid Hits Earth

The Dis­cov­ery Chan­nel has pro­duced a rather impres­sive (though cer­tain­ly bleak) sim­u­la­tion of what would hap­pen:

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The World Without Us: Get A Free Copy of the NY Times Bestseller

worldwithout2.jpgWhat if we dis­ap­peared from the face of the earth tomor­row? All of us, just like that? What would hap­pen? How would the remain­ing world sur­vive or thrive with­out us? That’s the sce­nario that gets exam­ined by sci­ence writer Alan Weis­man (who we inter­viewed last year) in his non-fic­tion eco-thriller, The World With­out Us.

Now out in paper­back, the book, which spent 26 weeks on The New York Times best­seller list, sees things play­ing out like this:

With no one left to run the pumps, New York’s sub­way tun­nels would fill with water in two days. With­in 20 years, Lex­ing­ton Avenue would be a riv­er. Fire- and wind-rav­aged sky­scrap­ers would even­tu­al­ly fall like giant trees. With­in weeks of our dis­ap­pear­ance, the world’s 441 nuclear plants would melt down into radioac­tive blobs, while our petro­chem­i­cal plants, ‘tick­ing time bombs’ even on a nor­mal day, would become flam­ing gey­sers spew­ing tox­ins for decades to come… After about 100,000 years, car­bon diox­ide would return to pre­hu­man lev­els. Domes­ti­cat­ed species from cat­tle to car­rots would revert back to their wild ances­tors. And on every dehabi­tat­ed con­ti­nent, forests and grass­lands would reclaim our farms and park­ing lots as ani­mals began a slow parade back to Eden.

The World With­out Us is a great read. And now some of our read­ers can get their hands on a free copy. We have 10 copies to give away, and here’s how we pro­pose doing it. We’ll give a copy to the first 10 read­ers (liv­ing in North Amer­i­ca) who add a qual­i­ty piece of “open cul­ture” in the com­ments sec­tion of this post. That is, you will need to post a link to an enrich­ing video, pod­cast or mp3 that fel­low read­ers will enjoy, and tell us a lit­tle about why. When we get ten qual­i­ty clips, we will then pack­age them in a post and share them with the larg­er com­mu­ni­ty. In short, think of it as you get as you give. How nice. Very Kum­baya. (Watch Joan Baez sing it). Now let’s see what you’ve got.

NOTE: We can only ship to read­ers in North Amer­i­ca. And, yes, that includes Cana­da this time, and Mex­i­co too. To our many inter­na­tion­al read­ers, I apol­o­gize for the geo­graph­i­cal lim­i­ta­tion. And we’ll try to make things up to you down the line. We do appre­ci­ate you.

Also please note that if you’re select­ed, I will also even­tu­al­ly need your name and mail­ing address.

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Stephen Hawking Asks Big Questions About The Universe

Speak­ing at the 2008 TED con­fer­ence, physi­cist Stephen Hawk­ing asks some Big Ques­tions about our uni­verse: How did the uni­verse begin? How did life begin? Are we alone? And, dur­ing his ten minute talk, he offers some thoughts on how we might go about answer­ing these big enchi­la­da ques­tions. (We’ve added the clip to our YouTube playlist.)

Replaceable You (and Other Free Stem Cells Courses)

Here’s anoth­er free, down­load­able course com­ing out Stan­ford, which will tell you how regen­er­a­tive med­i­cine can keep your body parts almost new. You can access it here on iTune­sU, and below we have post­ed the course descrip­tion. If stem cells hap­pen to pique your inter­est, then you may want to explore these two oth­er relat­ed Stan­ford cours­es: Straight Talk about Stem Cells and Stem Cells: Pol­i­cy and Ethics. Also remem­ber that you can down­load at least 200 free uni­ver­si­ty cours­es here.

Replace­able You: Stem Cells and Tis­sue Engi­neer­ing in this Age of Enlight­en­ment

“The good part about get­ting old­er is that we gain some wis­dom and patience. The bad part is that our bod­ies (knees, hips, organs, and more) start to wear out. But what if our bod­ies could be “repro­grammed” to grow new parts? The new field of regen­er­a­tive med­i­cine is try­ing to do just that, and it takes advan­tage of the process of regen­er­a­tion, which is nature’s solu­tion for repair­ing dam­aged tis­sues.

Although humans can­not re-grow their limbs like sala­man­ders and newts can, the capac­i­ty to regen­er­ate injured or dis­eased tis­sues exists in humans and oth­er ani­mals, and the mol­e­c­u­lar machin­ery for regen­er­a­tion seems to be an ele­men­tal part of our genet­ic make­up. The pre­vail­ing opin­ion is that the genes respon­si­ble for regen­er­a­tion have for some rea­son fall­en into dis­use, and they may be “jump start­ed” by the selec­tive acti­va­tion of key mol­e­cules. Using this knowl­edge, sci­en­tists are devel­op­ing new strate­gies to repair and, in some cas­es, regen­er­ate dam­aged or dis­eased tis­sues in both young and old patients. In this course, we will explore the excit­ing field of regen­er­a­tive med­i­cine and learn a lit­tle about what makes stem cells so spe­cial. We will also dis­cuss some of the recent dis­cov­er­ies that can poten­tial­ly allow us to be fit and healthy well into old age. Here, you will learn what is mere­ly sci­ence fic­tion and what, remark­ably, has become sci­ence fact in our new med­ical age.”

Jill Helms
Asso­ciate Pro­fes­sor, Depart­ment of Plas­tic and Recon­struc­tive Surgery
Jill Helms joined the Stan­ford fac­ul­ty after eight years at UC San Fran­cis­co, where she was the Direc­tor of the Mol­e­c­u­lar and Cel­lu­lar Biol­o­gy Lab­o­ra­to­ry in the Depart­ment of Ortho­pe­dic Surgery. Her research focus­es on the par­al­lels between fetal tis­sue devel­op­ment and adult tis­sue regen­er­a­tion. She received a PhD in devel­op­men­tal neu­ro­bi­ol­o­gy and a clin­i­cal degree and spends the major­i­ty of her time in clin­i­cal­ly relat­ed research.

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Top Ten Psychology Videos

Psy­ch­Cen­tral has post­ed its list of the ten best psy­chol­o­gy videos avail­able on the web. Below, we have post­ed links to the videos them­selves. But if you want a quick descrip­tion of each clip, then def­i­nite­ly read through the orig­i­nal post. Thanks to Kottke.org for bring­ing this to light.

1. An Unqui­et Mind: Per­son­al Reflec­tions on Man­ic-Depres­sive Ill­ness

2. The Stan­ford Prison Exper­i­ment

3. My Stroke of Insight

4. The Para­dox of Choice

5. Trapped: Men­tal Ill­ness in America’s Pris­ons

6. Teen Brain

7. Depres­sion: Out of the Shad­ows

8. Thin

9. I Am Not Sick, I Don’t Need Help: Research on Poor Insight and How We Can Help

10. The Psy­chol­o­gy of Glob­al Warm­ing

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