Americans are putting off parenthood longer than ever. In fact, the birth rate among US women in their early 30s outpaced ...

TFR in a specific year is defined as the total ... give birth to children in alignment with the prevailing age-specific fertility rates, according to the OECD. Typically, around 2.1 children ...

But the decline in fertility rates threatens to lead to deep economic malaise. Fewer babies and more older residents lead to a lower proportion of people of working age, denting tax revenues at ...

As males age their reproductive success typically declines. A study in fruit flies, led by University of Oxford researchers has found that while old males do produce fewer offspring than young males, ...

The ONS uses a measure of fertility called the total fertility rate. This is the average number of live children a group of ...