Now that we've simplified things by covering the more common arguments made by climate change skeptics, this episode is devoted to discussing some specific climate change skeptics and their arguments. Since this is the fifth episode in a series, I'd recommend that before listening to this episode, you first listen to episodes 45, 47, 54, and 56. In the next climate episode, it'll be time for some climate change proponents' turn in the barrel.

A continuation of episode 54's treatment of general points used by climate change skeptics. Since this is the fourth episode in a series, I'd recommend that before listening to this episode, you first listen to episodes 45, 47, and 54.

When the Chinese government demolished one of its aging weather satellites a few weeks ago, they did more than just test out a potentially useful technology. They also cluttered up low Earth orbit with a huge amount of debris, and stirred up a comparable amount of controversy in the press. While nobody is yet quite sure what the motivation behind the test was (to send a message to the White House? to start discussions on a new space treaty?), there's been no shortage of speculation on the subject. What hasn't received much attention is the history of this technology.

So this episode is all about the history of efforts to militarize space.

Today is the 100th anniversary of the birth of a giant of space exploration -- Sergey Korolyov (sometimes also transliterated as Sergei Korolev). For much of the 20th century, Korolyov was the prime driving factor behind the Soviet space program. He led the efforts to launch Sputnik, put Yuri Gagarin into orbit, and hold up the USSR's end of the race to the moon. Yet during Korolyov's life, even his existence was a Soviet state secret -- he was only ever publicly referred to as the "Chief Designer." After his death, he finally received some recognition for his accomplishments, yet many parts of Korolyov's life and work were more rumor than fact until after the collapse of the USSR.

Tune in this week, and you'll learn more about the impressive contributions made by a man who, until recently, was almost unheard of.

Sure, it's not much to look at -- but this humble lump of corroded bronze completely demolished our previous understanding of the history of mechanical inventions. The Antikythera Mechanism was built late in the 2nd century BC, and is the earliest example ever found of a geared mechanism, but represents a level of mechanical technology not seen again for nearly 2000 years!

Yes, I know -- I just talked about Stardust in episode 50. But in the meantime, the first batch of preliminary science papers was released on the 15th of December in the journal Science. There's a full set of material available (currently, at least, freely available) on the Science website, but many folks could probably use a bit of help in interpreting the news, and putting it into some sort of context.

Tune in this week, and I'll try to explain it all to you. If you're new to the podcast, I'd recommend you listen to episodes 16, 17, and 37 before this one.

Yes, it's time for another "grab bag" episode to get everybody caught up on recent and semi-recent developments in topics I've covered in past episodes. This week's fodder includes updates on the following subjects:

Mars -- see episode 41 (September 2006)

Asteroids and comets and dinosaurs -- see episodes 16, 17 (January 2006), and 24 (April 2006)

RFID -- see episode 13 (January 2006)

"Intelligent Design" -- see episodes 4 (October 2005), 11 (December 2005), 40 (September 2006)

It's the holy grail of flight -- propulsion without the expenditure of reaction mass. A practical reactionless drive system would render wheeled vehicles (flying cars, anyone?), aircraft with wings, and rockets as we know them obsolete. But is it real? Can it ever be real?

This episode covers the history of attempts at reactionless drives, and some recent news on a related controversy that "New Scientist" magazine unwittingly stirred up. In a first for this podcast, this episode has been researched and presented by a Geek Counterpoint listener -- Jason, from Brisbane, Australia. Let's all give Jason a warm welcome, and listen in as he gets us up to speed on this technology that lies somewhere between science and science fiction.

I talked at length about the Neanderthals just a few months ago, and then as often seems to happen, a bunch of new Neanderthal news popped up shortly afterwards. Listen in this week, and you'll get caught up with some really interesting recent discoveries on our beetle-browed friends (and relatives?).

Before you listen to this episode, I'd recommend you listen to the episodes on Piltdown (#9, 12/2005), Flores Man (#15, 1/2006), and the original Neanderthal episode (#36, 8/2006) first.

This episode, the second in a series on climate change, is intended to give everybody a little background in logical fallacies. In particular, a number of logical fallacies seem to be particularly prone to use in news reports, political debates, and various pundits' writings on climate change -- so this episode will cover my own "top 10" list of climate change fallacies. With both episode 45 and then this episode under our belt, we'll be ready to start putting all sorts of climate-related arguments to the test. Oh, and you get a promo too -- for a science fiction serial drama called Silent Universe.