Vikings’ navigational skills and travels led to more than plundering and cultural exchanges. It also spread Scandinavian plants and animals to places abroad – and likewise brought foreign flora and fauna to the Nordic countries.
Ammonia causes the disgusting smell of urine in liquid manure from pigs and cattle. Scientists are not far from finding a way of stopping the formation of ammonia, although, this will not entirely remove the smell.
The Arctic climate is entering a new state, say the scientists behind a new pan-Arctic report. But implementing the Paris Climate Agreement in full could stave off some of the biggest changes post 2050.