A large-scale analysis of 117 mammal species found that preventing reproduction is associated with longer lifespans, suggesting a strong link between reproductive activity and life expectancy. Why do ...

Senescence is the result of age-specific trade-offs among life history traits. Energetic trade-offs among various components of an organism's energy budget can also affect an individual's life span.

Removing a roundworm's germ cells prolongs the animal's life. The gonad is well known to be important for reproduction but also affects animal life span. Removal of germ cells – the sperm and egg ...

The life spans of plants, animals, and microbes range from minutes to millennia. Some reproduce only once and others many times. Why are life histories so diverse? Imagine an organism capable of ...

There’s been a virgin birth in the shark world. A captive female white-spotted bamboo shark has reproduced despite genetic tests that show its offspring had no fathers. Scientists believed the process ...

UNSW Sydney provides funding as a member of The Conversation AU. Few acts in the living world involve more intimate cooperation than sex. Two individuals combining their DNA to create a new and unique ...

A dramatic increase in childhood obesity in recent decades may have impacts that go beyond the usual health concerns – it could be disrupting the timing of puberty and ultimately lead to a diminished ...

Although biology is the study of life, even biologists don't agree on what 'life' actually is. While scientists have proposed hundreds of ways to define it, none have been widely accepted. And for the ...