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Really clever as an experiment. But looking at the size of those blades you'd need a hell of a big car park (err 'copter park) at your local Tescos.

Agree with joe - to expand a bit - apes and every other creature living today are modern lifeforms just as we are. There's a common misunderstanding about evolution that says evolution is the process whereby primitive creatures gradually evolve over long timescales to become 'higher' animals...

That's a good point - we talk about "survival of the fittest" but it's a phrase that Darwin never used - he referred to "natural selection". The phrase "survival of the fittest" is an unfortunate one popularised (I think) by the philosopher Herbert Spencer. Back to the Creationist issue...

Right - we're not talking fit in (either of!) the Jessica Ennis senses! We mean those best adapted to survival (and hence reproduction) in their specific environment.

I'm interested in opinions on this re-felting job. It's a conservatory roof - the job was organised by my mum about a year ago - I only got up on the roof to have a look last week. I'm no roofing expert but a number of things concern me: This edge is a bit tricky - the roof goes down to a...

Intersection of flat roof and pitched roof. Felt only laid up to edge of roof tiles.

Clouts used on capping sheet

Intersection of flat roof, end wall and pitched roof. Felt laid over lead flashing.

Edge detail

Edge detail

It's a scientific question. You can't answer it using religion. Religion starts from the point of "this is the truth (because it's written in a book) - it's a matter of faith - we don't need proof" Science on the other hand starts from a position of objective neutrality - and then tries to...

Yup jeds is spot on. Just to expand his workings for anyone who's interested - how many possible sequences (of 10) have exactly 4 heads in them? Well, if we have 10 positions in the sequence then the first head has 10 possibilities, the second has 9 etc giving us 10 x 9 x 8 x 7 possible...