'The yearning I have to go away [for Christmas] and think if I come home, it won't have happened,' says Bláthnaid Ni Chofaigh. Bláthnaid's talking about the loss of her sister Brid, who passed away ...

Parents try everything to influence their children. But new research suggests brothers and sisters have their own profound impact. Credit...Artwork by Kensuke Koike Supported by By Susan Dominus Susan ...