Researchers from the University of California, San Diego have successfully 3D printed a framework of functional blood vessels. Blood vessel networks are important in transporting blood, nutrients and waste around the human body.
The research team employed a 3D bioprinting process involving hydrogel and endothelial cells. Endothelial are the form of cells that make up the inner lining of blood vessels.
Leading the research was Shaochen Chen, who explains the motivation of the project.
A new well written but not very favorable write-up on #transhumanism. Despite this, more and more publications are tackling describing the movement and its science. My work is featured a bit.
On the eve of the 20th century, an obscure Russian man who had refused to publish any of his works began to finalize his ideas about resurrecting the dead and living forever. A friend of Leo Tolstoy’s, this enigmatic Russian, whose name was Nikolai Fyodorovich Fyodorov, had grand ideas about not only how to reanimate the dead but about the ethics of doing so, as well as about the moral and religious consequences of living outside of Death’s shadow. He was animated by a utopian desire: to unite all of humanity and to create a biblical paradise on Earth, where we would live on, spurred on by love. He was an immortalist: one who desired to conquer death through scientific means.
Despite the religious zeal of his notions—which a number of later Christian philosophers unsurprisingly deemed blasphemy—Fyodorov’s ideas were underpinned by a faith in something material: the ability of humans to redevelop and redefine themselves through science, eventually becoming so powerfully modified that they would defeat death itself. Unfortunately for him, Fyodorov—who had worked as a librarian, then later in the archives of Ministry of Foreign Affairs—did not live to see his project enacted, as he died in 1903.
Fyodorov may be classified as an early transhumanist. Transhumanism is, broadly, a set of ideas about how to technologically refine and redesign humans, such that we will eventually be able to escape death itself. This desire to live forever is strongly tied to human history and art; indeed, what may be the earliest of all epics, the Sumerian Epic of Gilgamesh, portrays a character who seeks a sacred plant in the black depths of the sea that will grant him immortality. Today, however, immortality is the stuff of religions and transhumanism, and how these two are different is not always clear to outsiders.
Contemporary schemes to beat death usually entail being able to “upload” our minds into computers, then downloading our minds into new, better bodies, cyborg or robot bodies immune to the weaknesses that so often define us in our current prisons of mere flesh and blood. The transhumanist movement—which is many movements under one umbrella—is understandably controversial; in 2004 in a special issue of Foreign Policy devoted to deadly ideas, Francis Fukuyama famously dubbed transhumanism one of the most dangerous ideas in human history. And many, myself included, have a natural tendency to feel a kind of alienation from, if not repulsion towards, the idea of having our bodies—after our hearts stop—flushed free of blood and filled with cryonic nitrogen, suspending us, supposedly, until our minds can be uploaded into a new, likely robotic, body—one harder, better, and faster, as Daft Punk might have put it.
Antibiotic resistance continues to rise, and new drugs made to battle these increasingly formidable 
microbes could take more than a decade to develop. In an effort to stress the urgency of this rising resistance, the World Health Organization (WHO) created a list of the twelve deadliest superbugs with which we are currently dealing.
The list is broken into three categories based on the severity of the threat (medium, high, or critical) that a given superbug poses. The three critical bacteria, Acinetobacter baumannii, Pseudomonas aeruginosa, and Enterobacteriaceae, are all already resistant to multiple drugs. One of these (Pseudomonas aeruginosa) actually explodes when they die, making them even more deadly.
Pathogens that cause more common diseases like food poisoning or gonorrhea round out the rest of the list. Some big hitters include MRSA and salmonella.
Inspired by origami, North Carolina State University researchers have found a way to remotely control the order in which a two-dimensional (2-D) sheet folds itself into a three-dimensional (3D) structure.
“A longstanding challenge in the field has been finding a way to control the sequence in which a 2-D sheet will fold itself into a 3D object,” says Michael Dickey, a professor of chemical and biomolecular engineering at NC State and co-corresponding author of a paper describing the work. “And as anyone who has done origami — or folded their laundry—can tell you, the order in which you make the folds can be extremely important.”
“The sequence of folding is important in life as well as in technology,” says co-corresponding author Jan Genzer, the S. Frank and Doris Culberson Distinguished Professor of Chemical and Biomolecular Engineering at NC State. “On small length scales, sequential folding via molecular machinery enables DNA to pack efficiently into chromosomes and assists proteins to adopt a functional conformation. On large length scales, sequential folding via motors helps solar panels in satellites and space shuttles unfold in space. The advance of the current work is to induce materials to fold sequentially using only light.”
Lasers are everywhere nowadays: Doctors use them to correct eyesight, cashiers to scan your groceries, and quantum scientist to control qubits in the future quantum computer. For most applications, the current bulky, energy-inefficient lasers are fine, but quantum scientist work at extremely low temperatures and on very small scales. For over 40 years, they have been searching for efficient and precise microwave lasers that will not disturb the very cold environment in which quantum technology works.
A team of researchers led by Leo Kouwenhoven at TU Delft has demonstrated an on-chip microwave laser based on a fundamental property of superconductivity, the ac Josephson effect. They embedded a small section of an interrupted superconductor, a Josephson junction, in a carefully engineered on-chip cavity. Such a device opens the door to many applications in which microwave radiation with minimal dissipation is key, for example in controlling qubits in a scalable quantum computer.
The scientists have published their work in Science on the 3rd of March.
Frozen organs could be brought back to life safely one day with the aid of nanotechnology, a new study finds. The development could help make donated organs available for virtually everyone who needs them in the future, the researchers say.
The number of donated organs that could be transplanted into patients could increase greatly if there were a way to freeze and reheat organs without damaging the cells within them.
In the new work, scientists developed a way to safely thaw frozen tissues with the aid of nanoparticles — particles only nanometers or billionths of a meter wide. (In comparison, the average human hair is about 100,000 nanometers wide.)
The more crops we cultivate, the less chance our food supply wil get wiped out by a disease.
Out of the more than 300,000 plant species in existence, only three species—rice, wheat, and maize—account for most of the plant matter that humans consume, partly because in the history of agriculture, mutations arose that made these crops the easiest to harvest. But with CRISPR technology, we don’t have to wait for nature to help us domesticate plants, argue researchers at the University of Copenhagen. In a Review published March 2 in Trends in Plant Science, they describe how gene editing could make, for example, wild legumes, quinoa, or amaranth, which are already sustainable and nutritious, more farmable.
“In theory, you can now take those traits that have been selected for over thousands of years of crop domestication—such as reduced bitterness and those that facilitate easy harvest—and induce those mutations in plants that have never been cultivated,” says senior author Michael Palmgren, a botanist who heads an interdisciplinary think tank called “Plants for a Changing World” at the University of Copenhagen.
The approach has already been successful in accelerating domestication of undervalued crops using less precise gene-editing methods. For example, researchers used chemical mutagenesis to induce random mutations in weeping rice grass, an Australian wild relative of domestic rice, to make it more likely to hold onto its seeds after ripening. And in wild field cress, a type of weedy grass, scientists silenced genes with RNA interference involved with fatty acid synthesis, resulting in improved seed oil quality.
Humanoid robots may enhance growth of musculoskeletal tissue grafts for tissue transplant applications.
Over the past decade, exciting progress has been made in the development of humanoid robots. The significant potential future value of humanoids includes applications ranging from personal assistance to medicine and space exploration. In particular, musculoskeletal humanoids (such as Kenshiro and Eccerobot) were developed to interact with humans in a safer and more natural way (1, 2). They aim to closely replicate the detailed anatomy of the human musculoskeletal system including muscles, tendons, and bones.
With their structures activated by artificial muscles, musculoskeletal humanoids have the ability to mimic more accurately the multiple degrees of freedom and the normal range of forces observed in human joints. As a result, it is not surprising that they offer new opportunities in science and medicine. Here, we suggest that musculoskeletal robots may assist in the growth of musculoskeletal tissue grafts for tissue transplant applications.
The woolly mammoth has been extinct for more than 4000 years. Now scientists are talking about bringing it back with the help of a powerful gene-editing technique called CRISPR-Cas9.
But CRISPR’s promise extends far beyond the possibility to resurrect extinct animals. It may also have the potential to boost crop yields and create alternatives fuel sources, protect us from insect-borne scourges like malaria and Zika, and even cure cancer.
A core set of genes involved in the responses of honey bees to multiple diseases caused by viruses and parasites has been identified by an international team of researchers. The findings provide a better-defined starting point for future studies of honey-bee health, and may help scientists and beekeepers breed honey bees that are more resilient to stress.
“In the past decade, honey-bee populations have experienced severe and persistent losses across the Northern Hemisphere, mainly due to the effects of pathogens, such as fungi and viruses,” said Vincent Doublet, postdoctoral research fellow, University of Exeter. “The genes that we identified offer new possibilities for the generation of honey-bee stocks that are resistant to these pathogens.”
According to the researchers, recent advances in DNA sequencing have prompted numerous investigations of the genes involved in honey-bee responses to pathogens. Yet, until now, this vast quantity of data has been too cumbersome and idiosyncratic to reveal overarching patterns in honey-bee immunity.
