Ovulation turns on desire for sex

Women are more likely to get pregnant through one-off unprotected sex because of their subconscious urge to have intercourse on their most fertile days, research has found.

A daughter’s dilemma

The Netherlands shows the better the sex education, the later sexual experience begins and the lower the number of unwanted pregnancies.

Don’t touch me there

How do you persuade teenagers there is value in virginity? Joanna Moorhead compares US-style moral pledges with British sex education, and finds few converts.

Joy of sex education

George Monbiot: America's virgin soldiers are on their way - ignoring the dangers of abstinence for teenagers.

Stop this sexual shielding

Kierra Box: Teenagers are not going to stop having sex, so give them access to advice and contraception.

£15m to stop rise in sex infections

The battle against a rising tide of sexually transmitted infections will get a £15 million boost this week in a drive to encourage embarrassed young lovers to come forward for treatment.

A bit of a turn-off?

The male contraceptive will improve sex drive, fight fatigue, and switch off sperm production too. But what about hidden side-effects? And will it be popular? By Clare Longrigg.