Compassion doesn't help all couples, finds study

More compassion = a better relationship. This is an obvious rule of thumb for couples. But it doesn't apply to everyone, as a study shows. Some people prefer to do without it.

Picky female sparrows may be more unfaithful

Picky female sparrows may be more unfaithful, new Imperial research suggests. Cheating on social partners is common in birds, and there are clear benefits to males who can raise more offspring without investing in their care. ...

Preferred traits vary depending on short or long-term relationship

A study by researchers at the University of Arkansas confirms previous work showing that women prefer physical strength—upper-body strength, specifically—in short-term contexts, but find that affiliative—or benevolent—humor ...

Twisted-wing parasites feel no pain

Reproduction in the insect order Strepsiptera—also known as twisted-wing parasites—is not for the fainthearted. To inseminate the eggs of its partner, the male partner injures the "neck" of the female with its hook-shaped ...

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