some of the busiest rail routes between london and the south—east of england are being taken over by the government today. a trial using pigs to scare away birds from one of europe's busiest airports is showing early signs of success. now on bbc news, melissa hogenboom explores the hidden forces at play that shape a mother's identity. a few years ago i became a mother for the first time, an immersive new reality. i'm a science journalist at the bbc and i have spent over a year researching the science behind how motherhood changes us and why this change can feel so stark and overwhelming. i was intrigued when i came across these intimate diaries about the experiences of new motherhood written by a dutch doctor in the 1980s. her words struck a chord, even three decades later. i had a strong drive to do something