Each minute 2500 Britons engage in love amounting to a staggering 900 million encounters of the close kind a year -- yet the activity results in barely 770000 British births each year a Cambridge mathematician has claimed. The statistics which apply to the entire population and have been adjusted for sleep were revealed as part of an ongoing project to document how attitudes to sex and procreation have changed over the decades Daily Mail reported. (Read: Listening the secret to a good relationship) The study also found that 30 percent of total sexual encounters take place before 16 and people