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Biology

Study: Altruism is in our genes

Choosing to be a blood donor is hereditary, shows new research. Reveals bigger truth about altruism.

Goby behaviour says much about sexual selection

One fish off the coast of central Norway has set a record for the number of female mates it had. And that’s not all.

Can cortisol indicate dementia?

High levels of the stress hormone cortisol could indicate memory problems in the elderly, but scientists do not know why.

Scientists clash: Is there an exercise hormone?

Norwegian researchers claimed that the so-called exercise hormone irisin is merely a myth. Now the discoverers of irisin are fighting back, writing that they have irrefutable evidence that the hormone works in humans.

Alzheimer’s prevention can vary between populations

A gene variation that protects against Alzheimer’s is missing in most Danes but not in other Nordic populations.

Wild horses could soon return to Europe

Scientists say we could have wild horse populations running free in just two decades.

Discovery could yield bee vaccine

A team of scientists has found out how bees protect their young against diseases. “This could be tremendous,” says a Norwegian participant in the project.

Scientists solve the riddle of eel evolution

European and American eels emerged as separate species 3.5 million years ago -- yet they can still breed with each other. Scientists can now tell us how.

Want to know your risk of dying in the next five years? Take the Ubble age test

OPINION: Scientists create website that allows you to calculate your five-year risk of dying.

Scientists find missing link of microorganisms

The tree of life has to be rewritten after a new type of microorganism was found recently in the depths of the ocean.