Any scubadiver or biochemist to help me with my sci-fi setting?

[s/LaSH]

You´ll find that cooking works different in those planets, too.

That is, air pressure determines the temperature at which water boils; low air pressure means your boiling water is somewhat cooler than it would be in high air pressure. I suspect fire would behave differently, too. And speaking of fire, it requires oxygen to work - lower oxygen content in the air would mean fires were harder to start, stayed smaller etc, while high air pressure might see flames taking on funny shapes. The oxygen content of an atmosphere will have interesting consequences for minerals and the potential for a metallurgic civilisation (oxidation processes), but that's something I know less about...

 

[Turanil]

Thanks to everyone for your answers. It helps me much!

Perhaps you can find some stuff here that would help.

http://www.specficworld.com/resources/world.html

It's got all kinds of resources for world building.

Excellent website! Thanks!

 

[Morte]

I have most d20 sci-fi games. Traveller 20 has some abstract tables to create planets, but nothing that would answer my (hopeless?) questions. I also have GURPS Transhuman space, who goes for realistic descriptions, but also no answer to my question there.

You should consider GURPS Traveller: First In -- it's the "heaviest" of the Traveller world generation books (even though half of it is about the Scout Service, which is a Traveller thing).