It's true, men from Mars and women from Venus, says academic.

Evidence No 1
What the development biologist Lewis Wolpert says:

Yes, it's official, men are from Mars and women from Venus, and here's the science to prove it

http://www.telegraph.co.uk/women/womens-life/11087100/Yes-its-official-men-are-from-Mars-and-women-from-Venus-and-heres-the-science-to-prove-it.html

Evidence No 2
(Alert: It gets less serious from here on, okay!)

Proof That Men Are From Mars, Women Are From Venus.

http://www.tickld.com/x/proof-that-men-are-from-mars-women-are-from-venus-this-is-priceless

But please see snopes.com below on how this wonderfully funny yarn emerged:

 http://www.snopes.com/college/homework/writing.asp

Evidence No 3

And the last word goes to Einstein...