Links for 2010-01-02

"To me, the idea that you should expend billions or trillions of dollars to accelerate a starship, only to decelerate it again, is pure lunacy. 90% of the ship's mass is support structures--either power or life support systems. The key to viable interstellar transport, in my view, is simple: if you've got it all in motion, keep it in motion and re-use it. The only thing you want to decelerate at your destination is your cargo."

Mark your calendar, Triple Cities folks.

"IT seems so distant, 1999. Bill Clinton had survived impeachment, his popularity hardly dented, Sept. 11 was just another date and music fans were enjoying a young singer named Britney Spears.

But there was a particular unease in the air. The so-called Y2K problem, the inability of computers to read dates beyond 1999 threatened to turn Jan. 1, 2000 into a nightmare. The issue had first been noticed by programmers in the 1950s, but had been ignored. As the turn of the century loomed, though, it seemed that humankind faced a litany of horrors. "

"Science journalists: depending on who you ask, they are either the unsung heroes of science outreach, or the villains of the piece with blood on their hands. Much of this debate hinges on qualifying exactly who counts as a science journalist in the first place. This is a semantic argument but an important one - where you draw the line affects how you perceive the successes and the failures of those on either side of it.

In response to criticisms, I have noted many people in the field diverting responsibility to others. The distilled version of this defence is that science journalism is work that's done by people who cover science beats for major news organisations. This excludes, for example, reporting about health (often regarded and billed as a separate speciality) or reporting that deals with scientific issues but is penned by interloping journalists from different beats. "