Three links for this Wednesday.

* "A consensus has developed during IPY that the Greenland ice sheet will disappear." This and other terrible news on climate change from Newsweek's science editor Sharon Begley.

* California is facing a severe prison crisis, which the disastrous "three strikes" law will only make worse.

* Since Mr Obama took office, the rate of threats against the president has increased 400 per cent from the 3,000 a year or so under President George W. Bush, according to Ronald Kessler, author of In the President's Secret Service.

The Daily Mirror has scenes from the daily life of the president of the United States. Via Gynomite.

The President-elect will also have to get used to handing his glass to a Secret Service agent every time he has a drink outside the White House. The agent carries a small bag in which to pop the glass and later he destroys it.

The idea is to ensure that no unauthorised person has access to the Presidential DNA, but it is not clear how an enemy would use it.

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The last word on the eliminationist rhetoric of the failed McCain/Palin ticket: Sarah Palin's attacks on Barack Obama's patriotism provoked a spike in death threats against the future president, Secret Service agents revealed during the final weeks of the campaign.

With March 4 looking more and more like it could be the definite win for Obama—he's now leading in Texas, per SurveyUSA, and a Rasmussen Ohio poll shows the race there tightening—it looks like a good time for the last of the great primary linkdumps for 2008.

* First up, naturally, is Frank Rich's "The Audacity of Hopelessness," perhaps the definitive pre-post-mortem of What Went Wrong for the once-inevitable candidate. From "Shame on you, Barack Obama" to outright mockery to this nonsense, all indications are that the so-called "moment" from last week's speech did not indicate Clinton's willingness to go out on a high note. Today the New York Times reports an internecine "'kitchen sink' fusillade" against the Democrats' presumptive nominee. I can't wait.

* Matt Yglesias says it never occurred to him that Obama could be assassinated until other people (I'm guilty) started talking about it. I like Matt Yglesias, but to me this indicates a shocking and almost incomprehensible lack of historical memory about the conditions that shaped the country into which we were both born. When I see a story about the Secret Service relaxing security at Obama events, a chill goes down my spine.

* Also via Matt Y., John B. Judis has a good and much-linked piece connecting Obama to a long tradition of American politicians promising us that we can start over.

* 20 minutes or so on why I am 4Barack, from Internet icon and Stanford prof Lawrence Lessig. I've gotten this in my email a few times and I wanted to put it up before it no longer mattered.

* And yes, I mean that, I think it's over next week, barring a fumble on Obama's part of Giuliani (Clintonesque?) proportions. Of course I said it was all over but the shouting after Super Tuesday, a prediction that I think has mostly been borne out. Chris Dodd has seen the writing on the wall. Even Marc Ambinder, who has been shilling for Clinton without any sense of self-respect for the last few months, has come around. Watch the debate tonight—I'll be liveblogging as usual, if only to see which version of Clinton shows up tonight—but I think Obama closes the gap in both Texas (which I think he'll win) and Ohio (not sure if he'll win, but it'll be close enough that he might as well have), which means he wins it next Tuesday.