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Concern for global warming is not a new craze

It is 80 years since the first calculations showed that the Earth was warming due to rising greenhouse gas emissions.

Why do trees sleep badly?

Scientists from Denmark and Hungary have studied the circadian rhythms of trees and discovered that many of them are poor sleepers. But why is this so?

A bumper crop of ancient DNA solves key mysteries of ancient human societies

The largest combined study of DNA extracted from ancient skeletons reveals dynamic shifts in genetics, language, and culture in the past 11,000 years.

The great escape: Birds fly away from disease

New study reveals how birds avoid disease by migrating and colonizing new habitats.

What’s the best place to hang a birdhouse?

If you go to all the trouble to hang a birdhouse, you definitely want to put it in the right place. But which is better: Sun or shade?

World’s highest waves form west of Norway

The world’s tallest ocean waves are generated south of Iceland. From there, these giants roll into the Norwegian and North Seas.

Salmon get their sense of direction from mum

Offspring are twice as likely to find their way home if their mother was wild.

How do trees know when to awake in spring?

Trees can see, feel and calculate time. Norwegian researchers have helped reveal another of trees’ tricks for surviving frigid winters.

What's the (dark) matter?

We don’t know what it looks like, and can’t even be certain it exists. Welcome to the frustrating and fascinating world of dark matter.

When two raven species become one

On the outside, they look similar, but common ravens in North America contain a counterintuitive tale about evolution in their genes.

Can nature clean up oil spills in the Arctic?

Oil-eating microbes often perform the bulk of the clean-up after an oil spill. But we might not be able to rely on these bacteria to clean up oil in the cold Arctic.

Are laboratory animals representative of their wild counterparts?

Despite being born and grown in the laboratory, our research suggests that their traits aren’t so different, making them perfect for studying how wild animals might respond to their environment.