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Walnuts are fruits, not nuts - but does it matter?

Biologists shy away from the term vegetables and they consider bananas to be berries. Why do they use other names than the rest of us?

DNA evidence is not always foolproof

DNA testing has become more and more precise, and tests can now be conducted on tiny bits of material from the crime scene. But DNA testing has its —mostly human—weaknesses.

Bumblebees show social learning

VIDEO: When one bumblebee learned to get hold of the sugar water it taught others the trick.

Meet ‘Mojn’, the ten million-year-old Danish whale

Scientists publish first scientific description of a ten-million-year-old fossil of a beaked whale discovered in Denmark.

Proteins allow archaeologists to look further back in time

Scientists have analysed 3.8-million-year-old proteins using a new method to see much further back in time than is currently possible with DNA.

‘Penis worm’ is the ancestor of almost all living animals

Newly discovered fossils show that the now almost extinct ‘penis worm’ is the answer to understanding the origin of almost 90 per cent of animal life today.

Marine bacteria are the climate’s wild card

How much carbon dioxide will the ocean be able to absorb in the future? A new study of marine bacteria brings us closer to the answer.

When will the Arctic be ice free?

Sea ice is declining rapidly and the prospect of an ice-free Arctic is drawing ever closer. But when will it happen? We cut through the headlines to bring you the facts.

Humans and dogs: Is our friendship genetic?

Swedish researchers have discovered the genes that make dogs man’s best friend.

Humans spread around the world in a single wave of migration

The largest genetic study to date concludes that all humans alive today are descendants from a single wave of migration.

How the Greenland ice sheet fared in 2016

OPINION: Scientists from the Danish Meteorological Institute give the Greenland ice sheet its annual health report.

Greenland Ice Sheet has already caused nearly five metres sea-level rise

New calculations show the true extent of ice melt from the Greenland ice sheet over the past 23,000 years.

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Today's selected stories

Norwegian study links flu vaccine to narcolepsy risk

The Norwegian Institute of Public Health has found an elevated risk of narcolepsy among children and young adults who were vaccinated against the swine flu seven years ago. Some who did not take the vaccine against the pandemic of 2009 also developed this severe sleeping disorder.