OUCH: Kagan pursued two paths on ‘don’t ask’ at Harvard. “That’s the title of the Washington Post’s front-page story about Elena Kagan’s treatment of the military at Harvard. My reaction is, of course she did.”

DEATH BY the numbers.

INTELLIGENT spy cameras.

AT AMAZON, it’s the Friday Sale.

IT’S CALLED THE KESSLER EFFECT: Pentagon: A Space Junk Collision Could Set Off Catastrophic Chain Reaction, Disable Earth Communications.

Some related thoughts here.

UPDATE: Rand Simberg: Pop Sci overstates the case.

TAXPROF: Obama Has Lost the Country on Taxes: From +19% to -10% in One Year. Loss of trust in honesty and competence will do that.

MOBILE DATA: A gold mine of info for telecommunications companies.

PATTERICO: A Picture Is Worth a Thousand Words: Screenshots of the Government’s Admission That James O’Keefe Did Not Attempt to Tamper With Landrieu’s Phones.

TOM MAGUIRE: Sestak: The Coverup Is Coming Together.

Plus, a straw in the wind for Sestak.

HMM: Bond Sales Fall to Least in Decade, Yields Soar: Credit Markets.

FASTER, PLEASE: Body’s Own Stem Cells Can Lead to Tooth Regeneration: Work at Columbia University College of Dental Medicine Holds Promise for a Biological Substitute for Dental Implants. I’ve got a dental implant, replacing a tooth that was damaged by trauma some years ago. It’s fine, but the process was annoyingly lengthy. I’d rather grow a new tooth.

YES, WE CANNABIS.

DO WE CLAMP THE UMBILICAL CORD TOO SOON? “Delaying clamping the umbilical cord for a slightly longer period of time allows more umbilical cord blood volume to transfer from mother to infant and, with that critical period extended, many good physiological ‘gifts’ are transferred through ‘nature’s first stem cell transplant’ occurring at birth. . . . The researchers concluded that many common disorders in newborns related to the immaturity of organ systems may receive benefits from delayed clamping. These may include: respiratory distress; anemia; sepsis; intraventricular haemorrhage; and periventricular leukomalacia. They also speculate that other health problems, such as chronic lung disease, prematurity apneas and retinopathy of prematurity, may also be affected by a delay in cord blood clamping.”

UPDATE: Reader Fernando Colina writes: “So this is a case in which you might say, slower, please?” Heh. Indeed.

SCRAMJET RECORD SMASHED: “A sleek aircraft called the X-51A WaveRider has set the record for the longest hypersonic flight using an air-breathing ‘scramjet’ engine. The engine operated for about 150 seconds – smashing the record set by NASA’s X-43 vehicle, which flew for 10 seconds or so in 2004.”

Other space news: Masten Space Systems Achieves First-Ever VTVL Midair Engine Relight Milestone on Path to Space. “Masten Space Systems, based at the Mojave Spaceport in California, demonstrated yesterday the ability to successfully relight the engine of a VTVL (vertical-takeoff vertical-landing) vehicle in midair. This marks the first-ever midair relight for any VTVL rocket-powered vehicle.”

PJTV: Did Ground Zero Mosque Founder Lie to New Yorkers? Is Real Goal Sharia Not “Religious Dialogue”?

FASTER, PLEASE: Retina Grown From Stem Cells.

CNBC: Eugene Fama on government as the biggest risk to recovery.

UH OH: Spain Loses AAA Rating. “Spain lost its AAA credit grade at Fitch Ratings, which said the country’s debt burden is likely to weigh on economic growth.”

DETAILS ON the Nissan Leaf battery pack.

BUMMER: H+ Magazine is on hiatus.

IN THE MAIL: Tale Of The Tigers, a novel by blogger Juliette “Baldilocks” Ochieng.

BYRON YORK: Obama Dodges, But Sestak Questions Won’t Go Away.

UPDATE: Bill Clinton And The Sestak Scandal.

MORE: Why did the White House contact Joe Sestak’s brother yesterday?

COURAGEOUS RESTRAINT.

COULD FACULTY UNIONS run universities?

VICTOR DAVIS HANSON: 20th Century History Down The Danube. “If we revised immigration policy and predicated legal entry on education and skill, ten million Europeans would arrive tomorrow, replete with degrees, expertise, and capital. There is a great unease over here, mostly in worry that no one knows the extent of aggregate debt, only that it is larger than let on and will result in higher taxes and fewer benefits without resulting in budget surpluses. It is always difficult for a government to ask its citizens to pay more than ever, receive less than ever, and end up nevertheless with greater debt than ever. We’re next. . . . If this implosion begins to unravel the EU, I think we will be once again right in the middle, rather than at the end, of history. There is simply too much history, too much memory, too many players over here to think a post-EU continent is going to always look like the Netherlands rather than from time to time the former Yugoslavia.”