You’re looking at a rabbit’s heart beating outside the animal that once hosted it. It’s alive, pumping blood on its own thanks to a revolutionary electronic membrane that may save your life by keeping your heart beating at a perfect rate.
They custom made it to precisely fit the shape of the rabbit’s heart: First, while the rabbit was still alive, they scanned it and created a 3D model using computer aided tomography. They manufactured the model in a 3D printer, which they used as a mold to create the membrane. After that they took the heart out, applied the membrane, and kept it beating at a perfect pace.
Not just some pace-maker
But this artificial pericardium is instrumented with high quality, man-made devices that can sense and interact with the heart in different ways that are relevant to clinical cardiology. When it senses such a catastrophic event as a heart attack or arrhythmia, it can also apply a high definition therapy. So it can apply stimuli, electrical stimuli, from different locations on the device in an optimal fashion to stop this arrhythmia and prevent sudden cardiac death. source: http://bit.ly/1jNn0ve
It was just last year that physicists thought they found the origin of Earth’s Van Allen radiation belts — and now a prominent group of them want those belts dead! It’s understandable, given the frustration these areas of space can cause to modern astrophysicists; if you want to launch a satellite or telescope, let alone a human being, the Van Allen belts will be a painful thorn in your side. So, says a growing group of astrophysicists, why not wipe them out altogether? It might seem odd to hear scientists propose destroying a feature of the natural world, but there is a decent scientific argument to be made that these belts provide us nothing useful, and that we could lose them without a single negative effect.
The Van Allen belts are huge, dual-lobed areas of space around the Earth which are filled with high-velocity charged particles — electrons and protons whipping around the planet at near-relativistic speeds. For years it was thought that we had two distinct belts — but just recently that was updated to three. The belts, we now know, are caused by Earth’s own magnetic field, which acts like a huge particle accelerator to ramp these ions up to dangerous speeds. Apollo astronauts were guinea-pigs in figuring out the human effects of traveling through the Van Allen belts — but we now know they’re mostly dangerous to electrical equipment. The belts pulse and morph with the changing of the seasons, and a manned mission can usually get through with only a minimal increase in radiation exposure.
The Van Allen probes helped NASA figure out the basic nature of the belts.
Many satellites and other orbiting equipment have to shut off periodically, though, to avoid damage in the belts. That’s a problem when launching equipment is often the single most expensive element of a mission; science will not abide a field that mucks with its experiments, nor even one that makes them ship expensive shielding into space. If there would really be no downside to destroying the belts, then why not just do it, if we can? Notice that there are two “ifs” in that statement. The second is the easier of the two: Can we clear the belts?
A new proposition from scientists around the globe claims that very low frequency radio waves could be used to disburse Van Allen protons in the lower atmosphere, clearing several helpful new orbital distances for use by satellites and other equipment. Radio waves have problems getting through the highly charged ionosphere, which sits between us and the Van Allen regions, but scientists are hopeful that powerful emitters could mitigate this problem. Satellite-based VLF radio emitters have also been proposed, but such devices would take too much energy for an orbital platform.
One older idea for disbursing the belts was called HiVOLT, or High Voltage Orbiting Long Tether. This would be a system of five cables, each about 100 kilometers long, used to create a magnetic field that deflects the orbit of these particles. This could hypothetically change the orbital period of the particles so they either crash into the atmosphere or careen off into space — possibly thus disbursing the belts in as little as two months.
The space shuttle has a “sandwich” of shielding for astronauts crossing the belts.
Whatever the eventual method, there is a growing movement to say goodbye to the belts — which is our second “if”: Will destroying one of Earth’s most fundamental features have any negative side effects? The easy answer is: probably not. The Van Allen belts are a symptom of Earth’s properties, not a property themselves, and as far as scientists can tell the swarm of high-velocity particles orbiting above us is unlikely to affect anything but the bets laid plans of space scientists. Also remember that these dispersion methods are only temporary; given enough time with no VLF waves or cables, the fields would form again for the same reasons they formed in the first place.
We’re used to affecting the Earth’s surface through everything from dams to landfills, but are we ready to start converting space to our own needs? It’s not a fundamentally different proposition, but one that seems unsettling to many people. If the plan goes forward over the next few years, expect to see significant push-back from environmentalists and other elements of the public sphere.
Apple’s security protocol breach is nearly as bad as handing your credit card straight to a hacker rather than making them steal the information through the magnetic stripe readers.
The flaw in Apple’s iOs and OS X platforms essentially allows a hacker to get in between the initial verification “handshake” connection between the user and the destination server, enabling the adversary to masquerade as a trusted endpoint. This means the connection which is supposed to be encrypted between you and your bank, email server, healthcare provider and more is open to attack.
Secure Sockets Layers, and more recently, Transport Layer Security protocols have protected web users for years by creating a digital secure handshake to identify and encrypt data from the browser to the secure end site. The Apple flaw puts hackers in the middle of that handshake, by allowing the SSL/TSL routines to be bypassed. (Photo credit: Shutterstock)
Security experts across the web recommend updating iPhones and iPads with the available iOS patches now, and using browsers other than Safari for OS X systems without an available Apple fix.
Usually to achieve encrypted web traffic, a handshake is accomplished through a Secure Sockets Layer — SSL for short — or more recently, Transport Layer Security, or TLS; both are Internet protocols that provide a secure channel between two machines operating over the Internet or an internal network.
The full severity of the security flaw has yet to surface, but the duplicated line of code which is causing all the ruckus has been in place since September 2012. This means theoretically that if you’ve been using the flawed iOS or OS X systems since then, a hacker on your shared network could have captured all your data that should have been SSL- or TSL-encrypted for the past 18 months.
Think of all the banking, online dating, email writing and Internet purchases you’ve made in the last year and a half.
The duplicated line of code that caused the Apple fail is shown here, and now dubbed on Twitter as #gotofail. (Image via Gizmodo)
The SSL/TLS effort requires nearly zero interaction from us — the users — but you may be familiar with the little lock icon that appears on the browser, indicating a secure connection has been achieved. This is where the Apple flaw comes in; anyone using the same network connection — the person sitting next to you at the coffee shop or at work right now — could fake the secure connection and intercept communication between your browser and a site.
Even worse, the flaw allows for modification of the “data in flight,” meaning a hacker could deliver exploits to take control of your system, according to Crowdstrike. And other applications that you may not immediately associate with Internet browsing are affected as well.
Ashkan Soltani points out the Calendar, Facetime, Keynote, Mail, Twitter, iBooks and other applications are just as vulnerable to the security flaw. (Image via Twitter)
Apple released a fix to the flaw housed in iOs 6 and 7 authentication logic, but the company only says the OS X fix is coming “very soon,” according to Reuters. This means Mac desktops and notebooks are still vulnerable to man-in-the-middle attacks.
Apple’s support page says the company will not “disclose, discuss, or confirm security issues until a full investigation has occurred and any necessary patches or releases are available,” but describes the fail was addressed by “restoring missing validation steps.”
Apple did not immediately respond to TheBlaze for clarification on how soon fixes for Mac desktops and notebooks will be available.