The things that look so trivial, and so many times go unnoticed, when one begins to question them, it feels strange and maybe even threatening. Or exciting ?-)

clipped from www.guardian.co.uk Five mysteries of the universe there are scientific phenomena that defy explanation 1 The missing universe Everything in the universe is either mass or energy, but there's not enough of either 96% of the cosmos is missing "dark energy" and "dark matter" 2 Life Next time you see a tree, ask yourself why that is alive when your wooden dining table is not. 3 Death Here's the flip side: in biology, things eventually die, but there's no good explanation for it switching genes on and off controls ageing, but if our theory is right, those switches shouldn't have survived natural selection 4 Sex almost everything in biology uses sexual reproduction rather than asexual cloning sex is a highly inefficient way to reproduce At the moment, sex only seems to exist to give males some role in life. 5 Free will Neuroscientists are almost convinced that free will is an illusion. our brains allow us to think we are controlling our bodies, but our movements begin before we make a conscious decision to move.