The invasive Pacific oyster is spreading rapidly in Oslofjord, causing injuries to bathers and threatening local ecosystems, with Oslo municipality now offering a reward for their removal.

Scientists now say that the harmful alga will survive the winter and that it will probably turn green in the Oslo fjord next year as well.

The tick can carry hemorrhagic diphtheria. The disease is widespread in the Middle East, Africa and Asia. In addition, some cases have been seen in southern Europe. The fever can cause serious illness in humans.

Hundreds of guillemots go astray in the Oslo fjord every autumn. Many are now starving in the food-poor fjord.

"It seemed like a normal day. It just showed up," says Torolv Røberg about the weather phenomenon. The dust devil was at least 100 meters high.

Odd Sørensen discovered this dead whooper swan on 10 April. The Norwegian Food Safety Authority has received daily reports of dead birds and are asking the public to help report bird mortality in particular with ducks, geese, swans, seagulls, eagles, buzzards, crowd and ravens.

Knut-André Haugen found two dead swans with their heads under their wings outside Fredrikstad. Now the Norwegian Food Safety Authority suspects further spread of bird flu.

Authorities fear the spread of a very deadly bird flu virus after finding dead birds. Domestic birds should from now be kept indoors, and people are asked not to feed birds in the wild.

The snowfall that came in the relatively mild Christmas season, was followed by severe cold and has caused the snow to freeze to bark and needles on conifers. The snow that now comes, settles on the branches in thick layers and is becoming heavier to carry.

Rescue teams searching for survivors four days after a landslide carried away homes in a Norwegian village found no signs of life Saturday amid the ruined buildings and debris. Three bodies have been recovered but searchers are still looking for seven more people believed to be missing. The landslide in the village […]

The tide of mud and clay destroyed as many as 14 houses in Ask in the municipality of Gjerdrum, some 30km north of Oslo. Hundreds were evacuated and police said 21 people living in the affected area were still unaccounted for. The landslide area is known for its "quick clay", a form of clay that can behave more like a liquid than a solid when disturbed. It is thought heavy rain in recent days may have caused the soil to shift.

Experts fear the future could be like the record year 2020: Shorter and warmer winters, wetter summers.

The cemetery in Eggedal has suffered major damage after floods and landslides. "Thank God that coffins and remains have not appeared," says the church guardian.

The changing summer weather has led to a scissor-like boom in Southern Norway. Biologist reassures those who feel threatened.

"Throughout Viken in the lowlands there is an increasing evidence of spruce bark beetles and that is worrying. What is positive is that in Measure Package No 2 from the Government you receive financial compensation for wind fall logging and forest management" says Lars Kr. Haug, head of forestry at Viken Skog.

Large menger glass jellyfish in the Oslo fjord cause problems for both beachgoers and shrimp fishermen. The whole trawl was full before it reached the bottom where the shrimp are.

The raspberries believes spring has begun now. They have started to bloom and have no idea that the cold temperatures may come in an instant.

The birds are singing, the flowers are germinating and the snow is not visible. January is record-breaking in several places in the country and Oslo sets a new snow-free record.