This video is a bit dry, but the idea is that you can program pebbles, or sand, to assemble into any shape at all... pretty cool!
Learn About Tissue Regeneration and Organ Printing
From Wikipedia
Tissue engineering is the use of a combination of cells, engineering and materials methods, and suitable biochemical and physio-chemical factors to improve or replace biological functions. While it was once categorized as a sub-field of bio materials, having grown in scope and importance it can be considered as a field in its own right.
While most definitions of tissue engineering cover a broad range of applications, in practice the term is closely associated with applications that repair or replace portions of or whole tissues (i.e., bone, cartilage, blood vessels, bladder, skin etc.). Often, the tissues involved require certain mechanical and structural properties for proper functioning. The term has also been applied to efforts to perform specific biochemical functions using cells within an artificially-created support system (e.g. an artificial pancreas, or a bio artificial liver). The term regenerative medicine is often used synonymously with tissue engineering, although those involved in regenerative medicine place more emphasis on the use of stem cells to produce tissues.
Aubrey de Grey: The Economics Of Immortality
Aubrey de Grey discusses the expenses of failing health in our advancing years and how radical life extension will resolve it by living in good health indefinitely. He also posits his opinions on over-population and the economics of ending aging.
From Wikipedia:
Indefinite lifespan or, indefinite life extension, is a term used in the life extension movement to refer to the longevity of humans, and other life-forms, under conditions in which aging can be effectively and completely prevented and treated. Such individuals would still be susceptible to accidental or intentional death by trauma or infectious diseases, but not death from aging. Their lifespans would be "indefinite," because protection from the effects of aging on health does not guarantee survival. Some life extensionists consider the term "indefinite lifespan" technically more correct than "immortality" which, especially in religious contexts, implies an inability to die.
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