One male Bluehead wrasse protects a harem of females, if the male dies, the biggest female becomes male in 10 days.
Indian Navy may get away with sacking sailor Sabi Giri for undergoing sex surgery, but why resist women serving in all roles
The Indian Navy may be legally in the clear on sacking sailor Sabi Giri but India should consider if it still makes sense to maintain these gender restrictions
The oldest tree in Britain - a male tree which is estimated to be between 3,000 and 5,000 years old - may be undergoing a sex change, say researchers who found that part of it is turning female.
Bradley Manning created a whole new set of potential complications for the U.S. military, asking to be known as a woman named Chelsea and to undergo hormone treatment
The high court said that if there was any threat to the petitioner, Bhidan Barua, he could approach the police for protection. Barua was scheduled to undergo a sex reassignment surgery which was delayed after his parents opposed it.
The petitioner, a 21-year-old who has been seeking permission to undergo a sex change operation has said he should be granted permission to commit suicide if he's not allowed to undergo the sex change surgery.
Jenna Talackova, 23, was born male, and that led the Miss Universe Canada organisers to disqualify her last week as a finalist in the 61st Miss Universe Canada pageant taking place in May.