Natural science

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Why the passenger pigeon died out

The passenger pigeon was once among the most numerous species on earth. The last passenger pigeon died in the Cinncinati Zoo just over 100 years ago. How did it all go so wrong?

Mystery in the bear cave

The oldest known bear bones from northern Scandinavia have been discovered in a limestone cave. But the cave also contained a mystery.

Brawler at the bird feeder

The common redpoll gets into brawls when it seems like it should really be watching out for enemies. How can that end well?

Fly hunter has discovered 30 new species

DNA analysis allows new species to be described all the time. Researcher Xiaolong Lin has recently published a description of eight new non-biting midge species, but has found many more.

A “health centre” for juvenile salmon

The condition of the water in salmon hatcheries can tell us a great deal about when and why outbreaks of disease occur. Now, SINTEF researchers are about to expose the water’s secrets, both to prevent suffering in fish and to save the aquaculture industry a great deal of money.

Infidelity can be forgiven – but at a cost

Most people who have been unfaithful do not believe it when their partner says they forgive them. And the fact that men often don’t realize that emotional infidelity is a problem just feeds the conflict.

Reveals the real greenhouse gas footprints of reservoirs

When hydropower reservoirs traps organic matter, it leads to higher local greenhouse gas emissions. But the emissions are not increased but displaced. A new tool calculates the real greenhouse gas footprints of reservoirs.

Stress in the nest can have lifelong effect

Why do some sparrows hatch six chicks while others don’t hatch any? How does upbringing affect the remainder of their lives? Physiological stress in the nest can actually affect birds’ DNA and possibly their lifespan.

Human Evolution in the Sea at Bioko

Did some of our human features evolve while our ancestors were living in water? The aquatic ape theory has been disregarded by paleoanthropologists, but it deserves another chance.

Avian songsters

Bird songs have many functions, but their main purpose is to attract a mate. Some of the best avian singers are described below.

The astronaut’s extra nose

How do we protect astronauts in space from breathing dangerous gases? A German-Norwegian hi-tech optical gas sensor provides a solution.

Snake robots in space

Norwegian researchers are investigating how a snake robot might carry out maintenance work on the International Space Station (ISS), study comets, and explore the possibility of living and working in lava tunnels on the Moon.

Fuel of the future

Heavy-duty trucks will soon be driving around in Trondheim, Norway, fuelled by hydrogen created with solar power, and emitting only pure water vapour as “exhaust”. Not only will hydrogen technology revolutionize road transport, it will also enable ships and trains to run emission-free.