Why are young adults having less casual sex?

Casual sex is on the decline for both young men and women, according to a Rutgers University-New Brunswick study that found less alcohol consumption among both genders is a major reason, while playing video games and living ...

Why fruit fly sperm are giant

In the animal kingdom, sperm usually are considerably smaller than eggs, which means that males can produce far more of them. Large numbers of tiny sperm can increase the probability of successful fertilization, especially ...

Can we really tell male and female dinosaurs apart?

Scientists worldwide have long debated our ability to identify male and female dinosaurs. Now, research led by Queen Mary University of London has shown that despite previous claims of success, it's very difficult to spot ...

Humans can't, but turtles can: Switching off senescence

All living organisms age and die—there is no way of escaping death. But not all organisms follow the same pattern of weakening and deterioration to old age and death—counter-intuitive as it may seem.

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