The Californian team noticed that a particular type of this receptor appeared to be highly active during pregnancy and the period after birth in mice.

BBC: Chemical clue to baby blues found

While some would prefer to leave things in the hands of their carers, many more would prefer to play an active role in making decisions about the birth.

BBC: Antenatal advice 'perpetuates C-section myths'

In America, as in most rich countries, longer life expectancies and lower birth rates will leave relatively fewer active workers to support the growing number of pensioners.

ECONOMIST: The perils of privatisation

With Kate Beckinsale as a vampire-hater of noble birth and David Wenham as a sexually active friar, plus the usual supporting cast of werewolves, underdressed throat biters, growling rustics, and so on.

NEWYORKER: Van Helsing

And his Facebook page remained enormously active through last weekend, even after Obama settled the birth certificate controversy by releasing his long-form birth certificate on April 27.

FORBES: Trump beats Palin on Facebook

Team Active has been engaged in a desperate plea for help in an industry that seems to give birth to a new ETF every week, making them costly, and as outdated as the mutual index fund.

FORBES: Active Money Management Gets Back Their MoJo

Beginning soon after birth, the most supportive mothers teach the joy of living and learning, through lots of active, encouraging, verbal and nonverbal communication.

CNN: Commentary: What parents can do for their kids