Rejuvenation in the Jellyfish Turritopsis Dohrnii
Updated: 2012-11-29 23:09:11
Aging has evolved despite its terrible effects on the individual because over the long run it is highly effective in the evolutionary competition that takes place in most ecological niches - any amount of hardship and pain can be selected for if it means that genes are more effectively propagated. There are exceptions, however, in the form of successful species that do not appear to age; especially in the case of lower animals we can find life histories that look nothing like our own. Take the hydra, for example, or here the tiny jellyfish Turritopsis dohrnii: [An individual Turritopsis dohrnii...

Five proteins were designed from scratch and found to fold into stable proteins as designed, proving the ability to provide ideal, robust building blocks for artificial protein structures.
One possible pathway from current technology to advanced nanotechnology that will comprise atomically precise manufacturing implemented by atomically precise machinery is through adaptation and extension of the complex molecular machine systems evolved by biology. Synthetic biology, which engineers new biological systems and function not evolved in nature, is an intermediate stage along this path. An [...]