Your level of engagement, network, product quality, and customers all gather momentum to help you reach that critical mass.

FORBES: Components of Startup Critical Mass Have Changed

Ms MacCallum said the fact parental warmth and quality of parenting was similar in all three groups showed "it is the level of commitment to parenting that is important, and not the presence or absence of biological links between parent and children".

BBC: NEWS | Health | Donor embryo children 'not told'

There will be a discussion with the grammar schools, as for all other schools in the country, about the quality of education that's there, the level of the standards that are provided.

BBC: Breakfast with Frost