pratyushc

> protect from cosmic radiation

That raises another issue of the planet having a magnetic core...

> Could the great filter be something like developing language?

Perhaps it's a combination of factors? Dolphins are social animals that appear to be capable of complex communications among themselves, but don't have hands to manipulate their environment the way we can.

Apes have hands, but don't have complex language.

I don't all the pros and cons, but SAR can see through cloud cover.

If it's made with proper merino wool then that would explain the price. I've bought merino jumpers in that price range before, and they're well worth it since they're warm but also light-weight.

Interesting. If you were given the copy on a computer owned by your employer, is it your copy or theirs?

Driving around in other countries and then coming back to Australia really opened my eyes to how aggressive (especially towards cyclists) the drivers are here.

So, Manna is finally becoming a reality: http://marshallbrain.com/manna1.htm