Geoff Brumfiel en Welcome To The Nuclear Command Bunker The stretch of Interstate 80 between Cheyenne, Wyo., and Lincoln, Neb., is straight and flat. High plains stretch out on either side.<p>But scattered along this unremarkable road, the Air Force keeps some of its most powerful weapons — <a href="">Minuteman III nuclear missiles</a>.<p>Outsiders are rarely allowed to see the missiles up close. Tue, 29 Jul 2014 19:58:00 +0000 Geoff Brumfiel 22669 at Welcome To The Nuclear Command Bunker To Stop Cheating, Nuclear Officers Ditch The Grades The young officers at <a href="">F.E. Warren Air Force Base</a> have an enormous job: to keep 150 nuclear-tipped missiles ready to launch at a moment's notice.<p>Understandably, they're expected to know exactly what they're doing.<p>Three times a month, they're tested on the weapons and the codes used to launch them. Anything less than 90 percent is a fail.<p>But until recently, even 90 percent wasn't really good enough. "I was told that if I got a 90 on a test, I was a D student — and I would be treated that way," says Lt. Mon, 28 Jul 2014 17:19:00 +0000 Geoff Brumfiel 22610 at To Stop Cheating, Nuclear Officers Ditch The Grades What Brought Down The Malaysian Airliner? Shortly after news broke that a Malaysia Airlines flight crashed in eastern Ukraine, suspicions began to swirl that the plane had been shot down. NPR's Geoff Brumfiel speaks with Audie Cornish about the feasibility that a missile brought down the airliner. <div class="fullattribution">Copyright 2014 NPR. Thu, 17 Jul 2014 20:27:00 +0000 Geoff Brumfiel 22102 at Physicists Crush Diamonds With Giant Laser Physicists have used the world's most powerful laser to zap diamonds. The results, they say, could tell us more about the cores of giant planets.<p>"Diamonds have very special properties, besides being very expensive and used for jewelrey etc.," says <a href="">Raymond Smith</a>, a researcher at <a href="">Lawrence Livermore National Laboratory</a> in California. "It's the hardest substance known to man."<p>And diamonds aren't just here on Earth. Thu, 17 Jul 2014 07:34:00 +0000 Geoff Brumfiel 22066 at Physicists Crush Diamonds With Giant Laser In A Lab Store Room, An Unsettling Surprise: Lost Vials Of Smallpox Scientists at the National Institutes of Health made an unpleasant discovery last week as they cleaned out an old laboratory: The lab contained vials of the smallpox virus, previously unknown to authorities. The vials have since been transferred to a secure lab at the federal Centers for Disease Control and Prevention in Atlanta. <div class="fullattribution">Copyright 2014 NPR. Tue, 08 Jul 2014 21:14:00 +0000 Geoff Brumfiel 21655 at Carbon Observatory To Monitor Greenhouse Gas From Space NASA is preparing to launch a new satellite to observe carbon dioxide from space. The satellite could revolutionize our understanding of where this greenhouse gas comes from and where it goes. Tue, 01 Jul 2014 09:21:00 +0000 Geoff Brumfiel 21301 at Carbon-Sensing Satellite Prepares For Second Launch NASA is preparing to launch a satellite capable of monitoring carbon dioxide emissions from space. The <a href="">Orbiting Carbon Observatory-2</a> (OCO-2) will be the first U.S. spacecraft dedicated to seeing the greenhouse gas from orbit, and could pave the way for new technology to enforce future global warming treaties.<p>But first OCO-2 needs to make it off the ground. Mon, 30 Jun 2014 20:17:00 +0000 Geoff Brumfiel 21277 at Carbon-Sensing Satellite Prepares For Second Launch World's Chemical Weapons Watchdog Clears Syria Transcript <p>MELISSA BLOCK, HOST: <p>This is ALL THINGS CONSIDERED from NPR News. I'm Melissa Block.<p>AUDIE CORNISH, HOST: <p>And I'm Audie Cornish. Syria has handed over the last of its declared chemical weapons. That's according to the world's chemical weapons watchdog. The move is a key step in a deal negotiated last fall, after the U.S. had threatened to conduct airstrikes against Syria. But many questions remain about Syria's use of chemical weapons and whether remnants of its chemical stockpile remain. Joining me to discuss all this is NPR's Geoff Brumfiel. Mon, 23 Jun 2014 20:07:00 +0000 Geoff Brumfiel 20934 at Dust Clouds Big Bang Signal In March, a team of physicists announced <a href="">it had found a signal from the very first moments after the Big Bang</a>. Fri, 20 Jun 2014 21:35:00 +0000 Geoff Brumfiel 20835 at Dust Clouds Big Bang Signal Scientists Keep A Careful Eye On The World Cup Ball <p></p> Fri, 20 Jun 2014 07:38:00 +0000 Geoff Brumfiel 20785 at Scientists Keep A Careful Eye On The World Cup Ball