This is why spouses in happy marriages tend to think that their husband or wife looks much better than anyone else thinks that they do.

And then finally, if you spin opposite pairs of rotors faster than the other pair, then the robot yaws about the vertical axis.

So once we realized that we could make 5,000 base pair viral sized pieces, we thought, we at least have the means then to try and make serially lots of these pieces to be able to eventually assemble them together to make this mega base chromosome.

In a sense, sexual selection is the psychological extension of natural selection. But, instead of gaining an advantage from traits that enhance one s ability to survive, one gains an advantage from qualities that potential mates have evolved to find appealing.

Denial of gay couples legal right to call themselves married is has become intolerably discriminatory. But allowing them to marry has proved a harder legislative nut to crack than allowing them civil partnerships.

ATHENS On Valentine s Day, countless couples will celebrate romance by candlelight. On the same day, one billion women and men worldwide will stand up to shine a light on the darker side of gender relations.