‘The arrival of a third child is not associated with an increase in the parents’ happiness, but this is not to suggest they are any less loved than their older siblings,’ the researchers said. Photograph: Getty Images/iStockphoto

The birth of a first and second child briefly increases their parents’ level of happiness, but welcoming a third child does not.The level of happiness(...)

Rhinolophus mehelyi in northeast Bulgaria: in a study, the males had echolocation calls 30 kilohertz higher than the range expected for bats of this size. Photograph: Sebastien Puechmaille

Love at first sight is nice when you want to find a partner, but pity the lovelorn bat. It has to find the love of its life in complete darkness an(...)

Training videos produced in Vienna were played to marmoset monkeys in Brazilian rainforests. 3:09

Old dogs aren’t the only ones learning new tricks. Researchers have shown that monkeys in the wild can watch “educational” videos and learn new ways (...)

Neanderthal man who lived from about 120,000 years ago to 30,000 years ago. Photograph: Tom McHugh/Field Museum, Chicago/Science photo Library

International experts on our much misunderstood and somewhat maligned ancestor, the Neanderthal, gather in NUI Galway today– the campus where the term(...)

After sunset: what avian dreams may come? Illustration: Michael Viney

This is the month of sunsets like bonfires, blazing up over the islands in luridly gilded flames or sinking redly and smokily into a frieze of purple (...)

Fertility rising
  • World
  • April 1, 2013, 06:00

The number of children women in the developed world are having over their lifetimes is increasing again, or has stopped declining, new research(...)