A lot of medicine's direst emergencies come down to one problem: lack of oxygen.
Cardiologist John Kheir started thinking about that when a little girl in his care, drowning from lung hemorrhages, died before she could be hooked up to a heart-lung machine that would have kept her blood oxygenated while the damage was repaired.
Originally published on Wed September 19, 2012 4:35 pm
By Marcelo Gleiser
It's good to start by explaining this title since, to most people, "multiverse" isn't even a word. The idea is that our Universe (with capital "U") is but one amongst a multitude of other possible universes, all part of a single multiverse.
So you're minding your own business when all of a sudden, a nuclear bomb goes off, there's a shock wave, fires all around, general destruction and you, having somehow survived, need a drink. What can you do? There is no running water, not where you are. But there is a convenience store. It's been crushed by the shock wave, but there are still bottles of beer, Coke and diet soda intact on the floor.
So you wonder: Can I grab one of those beers and gulp it down? Or is it too radioactive? And what about taste? If I drink it, will it taste OK?
When scientists were looking for the first person to test a new, superfast way of deciphering someone's entire genetic blueprint, they turned to James Watson – the guy who shared a Nobel Prize for discovering the structure of DNA.
"They had to sequence someone, so they got me," he says.
Originally published on Tue September 18, 2012 12:37 pm
By Adam Frank
Imagine every thousandth blood cell in your body has a tiny radio transmitter in it. Imagine that 10 times a second that transmitter sends each cell's location to a computer storing the data. Along with position, it also sends the concentration of a list of 10 chemicals encountered at receptors distributed at 10 sites over the surface of each cell. Now imagine following all those blood cells for an hour. That makes a billion blood cells being sampled 10 times a second for 3,600 seconds.
Twin spacecraft recently began orbiting the earth, and the probes have been sending back strangely beautiful recordings of the sounds of space. Scientists call it the chorus. The sounds come from the magnetosphere, an area where charged particles from the sun interact with the earth's magnetic field.
Space shuttle Endeavour begins a kind of farewell tour this week. The shuttle will set off on a cross-country trip to its retirement home, flying from Florida to Los Angeles on the back of a modified jumbo jet.
Along the way, the spaceship will stop off in Houston, home of NASA's Mission Control and, weather permitting, fly over NASA centers and various landmarks in cities that include San Francisco and Sacramento.