Medical conditions that deprive the testes of oxygen, such as sleep apnea, may be contributing to the decline in male fertility observed over the past 50 years, a new study suggests.

Marmalade hoverflies leave northern Europe each autumn to escape the cold winter. A study, by the University of Exeter, ...

Male hoverflies are outflown by females when it comes to long-distance migration, new research shows.Marmalade hoverflies ...

After waiting over a decade to get in, the Andersons were kicked out of Disneyland’s most exclusive club. They would not go ...

Read on to discover incredible animals that once inhabited the UK (and to see which ones are making a comeback)... Gigello/Shutterstock Brown bears were once a common sight in Britain. These wild ...

12,500 Years ago: Evolved to live at high altitudes Until recently it was ... a trait to appear by chance and then spread by sexual reproduction. This works nimbly in mice, which can produce ...

These high-altitude forests are cool ... to efforts by the Chinese government to not only protect their natural habitats but also by successful reproduction programs. Enter your email in the box below ...

The immediate effects of low oxygen on sperm quality are temporary, but new evidence suggests that a long-term decrease in ...

Men who brave high altitudes to climb or hike are at an increased risk of infertility according to a new study. And, while the damage appears to be reversible, it could take months for their ...