Why You Need a Time Machine: Dr. Kaku Explains String Theory
In this excerpt from his lecture for The Floating University, Dr. Kaku explains that time machines do not violate Einstein's laws of physics, and that future humans would be wise to build one and slip through a wormhole before the cooling universe extinguishes all known life.
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Sci-fi writer Arthur C. Clarke once said, "The only way of discovering the limits of the possible is to venture a little way past them to the impossible." Dr. Michio Kaku would like to clarify what kind of impossibility we're talking about.
There's a difference, he says, between ideas that are beyond our technical capabilities today but will be available within the next century, ideas that will be doable 1000 years from now, and ideas that violate the known laws of physics. Surprisingly, very little falls into the third category.
In this excerpt from his lecture for The Floating University, Dr. Kaku explains that time machines do not violate Einstein's laws of physics, and that – difficult though it might be – future humans would be wise to build one and slip through a wormhole to one of the alternate dimensions proposed by string theory before the cooling universe extinguishes all known life.
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What can 3D printing do for medicine? The "sky is the limit," says Northwell Health researcher Dr. Todd Goldstein.
- Medical professionals are currently using 3D printers to create prosthetics and patient-specific organ models that doctors can use to prepare for surgery.
- Eventually, scientists hope to print patient-specific organs that can be transplanted safely into the human body.
- Northwell Health, New York State's largest health care provider, is pioneering 3D printing in medicine in three key ways.
Depression is quicksand, says comedian Pete Holmes. Try this method to help you cope and live with depression.
- Everyone's experience with depression is different, but for comedian Pete Holmes the key to living with depression has been to observe his own thoughts in an impartial way.
- Holmes' method, taught to him by psychologist and spiritual leader Ram Dass, is to connect to his base consciousness and think about himself and his emotions in the third person.
- You can't push depression away, but you can shift your mindset to help better cope with depression, anxiety, and negative emotions. If you feel depressed, you can connect with a crisis counselor anytime in the US.
As Game of Thrones ends, a revealing resolution to its perplexing geography.
- The fantasy world of Game of Thrones was inspired by real places and events.
- But the map of Westeros is a good example of the perplexing relation between fantasy and reality.
- Like Britain, it has a Wall in the North, but the map only really clicks into place if you add Ireland.
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