Is it time for a debate on whether there are any circumstances where there is an ethical case for ‘editing’ human embryos?
They may not look like it, but each of these photos from Rosetta is of the same site on Comet 67P/ Churyumov-Gerasimenko, within just six short weeks. Something big is happening up there—but what is it?
This particular comet site has been steadily monitored by the ESA since August of 2014, and nothing has been happening. Literally. Viewed in detail of up to 1/10 of a meter, the site had stayed exactly the same. Until late May, when suddenly everything started changing again and again and again.
Some land features disappeared, others were added. Some were temporary, some stayed. What’s happening there and why? Scientists still aren’t sure, but they’ve come up with a few theories:
There are over 500 million hungry people in the world—but that number only tells part of the story. The other part of it is the amount of the actual food shortfall. So how much food would we need to make up the gap? There’s now an exact number.
The latest International Food Security report is out, and the good news is that global food insecurity has been falling—and it’s projected to keep on doing that over the next 10 years. The bad news? It’s not falling everywhere. Sub-Saharan Africa is especially being shut out of these gains.
But how much food would it take to close the gap for every food insecure person on the planet to have access to 2,100 calories a day? The USDA has calculated a figure: 11.8 million tons of grain.
Just five months after scientists in China made history by modifying the germline of human embryos, a research team in the U.K. is requesting permission to do the same, but strictly for research into infertility. Given recent calls for a moratorium on such research, the decision is likely to set a precedent for future requests.
Scientists working at London’s Francis Crick Institute have submitted a formal request with the U.K.’s Human Fertilisation & Embryology Authority (HEFA) to use a gene editing technique for research into human infertility. The researchers have no intention of bringing their genetically modified embryos to term, nor will they be implanted; the scientists are reassuring HEFA and the public that all embryos will be destroyed.
Should permission be granted, it will mark the first time that scientists in the UK—or anywhere in the world for that matter (China excepted)—will have the opportunity to conduct research of this nature, which many consider controversial.
https://youtube.com/watch?v=WnrXBdznOe8
Hyperloop, dubbed “the fifth mode of transport,” is real. At least, that’s what the introductory video released this week on YouTube is trying to communicate.
Hyperloop is a project envisioned by engineer and inventor Elon Musk. In short, the goal is to build a high-speed transportation system using a low-pressure tube train, with a top speed of 800 miles per hour (1,300 km/h). Hyperloop Technologies and Hyperloop Transportation Technologies are both research companies looking to turn Musk’s vision into reality. The former company has undergone a seed round led by SherpaVentures, while the latter is crowdsourced.
Continue reading “Hyperloop’s intro video claims the future is now” »
PASADENA, Calif. — A new way to harvest asteroid resources is being eyed as a possible game changer for space exploration.
The patent-pending innovation, called “optical mining,” could allow huge amounts of asteroid water to be tapped, advocates say. This water, in turn, could provide relatively cheap and accessible propellant for voyaging spacecraft, lowering the cost of spaceflight significantly.
Development of the optical-mining idea has been funded by a NASA Innovative Advanced Concepts (NIAC) fellowship and grant, along with a small business contract. The concept — which is also known as the Asteroid Provided In-Situ Supplies plan, or Apis — was detailed here during a special NIAC session held on Sept. 2 during the American Institute of Aeronautics and Astronautics’ (AIAA) Space 2015 meeting. [How Asteroid Mining Could Work (Infographic)].
Chinese scientists used the CRISPR-Cas9 editing technique to alter the genome of a “nonviable” human embryo.
Invisibility cloaks are designed to bend light around an object, but materials that do this are typically hard to shape and only work from narrow angles — if you walk around the cloaked object, for instance, it’s visible. But a new cloak avoids that problem, and is thin and flexible enough to be wrapped around an object of any shape, the researchers said. It can also be “tuned” to match whatever background is behind it — or can even create illusions of what’s there, they added.
Led by Xiang Zhang, director of materials science at Lawrence Berkeley National Laboratory, the group constructed a thin film consisting of a 50-nanometer-thick layer of magnesium fluoride topped by a varying pattern of tiny, brick-shaped gold antennas, each 30 nanometers thick. (For comparison, an average strand of human hair is about 100,000 nanometers wide.) The “bricks” were built in six different sizes, ranging from about 30 to 220 nanometers long and 90 to 175 nanometers wide. [Now You See It: 6 Tales of Invisibility in Pop Culture]
The scientists then wrapped up a tiny, irregularly shaped object measuring about 36 microns across, or a bit more than one-thousandth of an inch. Shining a light, with a wavelength of 730 nanometers, or near-infrared, they found that it reflected back almost perfectly. The light scattering from the cloak still bounced off the object, but without revealing where the object was — as though there were just a flat mirror in its place, the researchers said.
At the end of 2015, the US national debt will be 18.6 trillion dollars. With such a big number, it’s tempting to put it in perspective by comparing it with things more easily envisioned. 
Alas, I can not think of anything that puts such an oppressive and unfair burden into perspective, except to this:
US debt represents a personal obligation of $60,000 for each American citizen. And it is rising quickly. Most of our GDP is used simply to pay down interest on that debt. Few pundits see a way out of this hole.
In my opinion, that hole was facilitated in August 1971, when the US modified the Bretton Woods Agreement and unilaterally terminated convertibility of the US dollar to gold. By forcibly swapping every dollar in every pocket and bank account with the promise of transient legislators, individual wealth was suddenly based on fiat instead of something tangible or intrinsic.
Continue reading “What if U.S. had raised interest rates?” »
