Lifeboat Foundation: Safeguarding Humanity
Toggle light / dark theme

Blog – Page 11,925

Here in the Lifeboat Blog, I have the luxury of pontificating on existential, scientific and technical topics that beg for an audience—and sometimes—a pithy opinion. Regular Lifeboat readers know that I was recently named most viewed Bitcoin writer at Quora under a Nom de Plume.

Quora is not a typical Blog. It is an educational site. Questions and numerous answers form the basis of a crowd-sourced popularity contest. Readers can direct questions to specific experts or armchair analysts. A voting algorithm leads to the emergence of some very knowledgeable answers, even among laypersons and ‘armchair’ experts.

During the past few weeks, Quora readers asked me a litany of queries about Bitcoin and the blockchain, and so I am sharing selected Q&A here at Lifeboat. This is my professional field—and so, just as with Mr. Trump, I must resist an urge to be verbose or bombastic. My answers are not the shortest, but they are compact. Some employ metaphors, but they explain complex ideas across a broad audience.

As you browse some recent Bitcoin questions below, click a question for which you know the least. (Example: Do you know what the coming ‘halving event’ is about?). Leave a comment or question. I am interested in your opinion.

Philip Raymond sits on Lifeboat’s New Money Systems Board, is co-chair of the
The Cryptocurrency Standards Association, and is a most viewed writer at Quora.

Still trying to figure out how Luxembourg got a space program.

(AFP) Luxembourg has staked its claim to the final frontier with an ambitious plan to profit from the mining of asteroids, the government said Thursday.

The Grand Duchy has joined forces with American company Deep Space Industries (DSI) to cash in on the wealth of natural resources thought to exist on asteroids.

The two have inked an agreement that will pave the way for Luxembourg to partly fund DSI’s plans to probe nearby asteroids for mineral riches using “nano” spaceships.

Read more

3058464-poster-p-1-the-halo-effect

“Daniel Chao, a Stanford-trained neuroscientist, and Brett Wingeier, a biomedical engineer, founded Halo Neuroscience in 2013. … Halo Sport uses electrodes to stimulate the brain’s motor cortex, which controls planning and voluntary movements. Energized motor neurons send stronger signals to athletes’ muscles, which Chao says allows them to reap greater rewards from every rep.”

Read more

Ido Bachelet, Shawn Douglas and George Church filed a patent in 2011 for DNA origami devices useful in the targeted delivery of biologically active entities to specific cell populations.

This is the patent for the DNA nanorobot for molecular precise delivery of treatments to cells. This has been covered several times by Nextbigfuture

Their DNA origami device comprises a scaffold strand and a plurality of staple strands, wherein:

Read more

Want to be IronMan, Captain America, Super Woman, X-Men Mutant, etc. Well, you maybe able to.

If watching “Captain America: Civil War” this weekend revives your childhood dreams of becoming a superhero, technology may be on your side to make it happen — but science is a little more discouraging.

Read more

A study of the embryonic nervous system of the fruit fly throws light on how two neuronal cell lineages that develop at different times and in different places in the ventral nerve cord of the embryo can ultimately result in very similar neuronal subtypes. The study, publishing in the Open Access journal PLOS Biology on 5th May, is a collaboration between research teams in Madrid (Spain) and Linköping (Sweden).

In the paper, Hugo Gabilondo, Johannes Stratmann and their colleagues report that a crucial terminal selector gene, col, is activated by different sets of spatio-temporal selector genes in the two different neuronal cell lineages. In dAp neurons, which are present throughout the thorax and abdominal segments, col is activated directly by the action of the early temporal genes Kruppel (Kr) and pdm, and the GATA transcription factor gene grain (grn). By contrast, in Tv1 neurons, which are specific to the thoracic segments, col is activated by the late temporal gene cas, together with several other genes that feed forward onto the terminal selector gene cascade downstream of col. The result is expression of the neuropeptide Nplp1 in both dAp and Tv1 neurons.

The developing generates many different neuronal cell types; understanding this process of cell fate specification remains a major challenge for biologists. Complex cascades of regulatory genes are known to be involved, starting with spatial and temporal selector genes and finishing with terminal selector genes, all of which act in various combinations to dictate the ultimate neuronal cell type. A particular type often arises in several parts of the nervous system and at different stages of development, however, suggesting that different spatio-temporal cues can converge on the same terminal selectors to generate a similar cell fate. This study reports evidence of this phenomenon in an example from the fruit fly, Drosophila melanogaster.

Read more