How local communities can transition to sustainable energy systems – science newsline gas after eating bread

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For decades, researchers have thought that access to food determined the brood size of birds. Now, biologists at Lund University in Sweden have discovered a completely new explanation: the body temperature of small birds can increase by more than 4°C to exceed 45°C when they are feeding their young. Larger broods would require more work, resulting in even higher body temperatures – something the birds would probably not survive.

For human beings to function socially, they need to be able to perceive, understand, and talk about others’ mental states, such as beliefs, desires and intentions. There is no consensus among researchers as to when children develop this ability. Previous research indicates that it emerges around the age of four, but research at Lund University in Sweden shows that children can demonstrate this ability earlier – within social situations that they experience together with an engaged adult.

Sustainable, biological filters called slow sand filters have been used to filter drinking water since the 1800s. They don’t use any chemicals, create no waste and use very little energy. However, technologies that meet modern requirements for control, monitoring and time-efficiency have become popular, while biological water treatment has been less favoured, since little has been understood about how it works. New research from Lund University in Sweden shows that not only are the older filters more efficient cleaners – they could be

In a unique study, researchers at Lund University in Sweden have mapped the origins of migratory birds. They used the results to investigate and discover major differences in the immune systems of sedentary and migratory birds. The researchers conclude that migratory species benefit from leaving tropical areas when it is time to raise their young — as moving away from diseases in the tropics enables them to survive with a less costly immune system.

Researchers at the Centre for Environmental and Climate Research at Lund University have studied how pollination varies in different agricultural landscapes, by placing pots with either wild strawberry or field bean in field borders. Plants that were placed in a small-scale agricultural landscape, with pastures and other unploughed environments, were better pollinated than plants in landscapes dominated by arable land.

Hematopoietic stem cells, that form mature blood cells, require a very precise amount of protein to function — and defective regulation of protein production is common in certain types of aggressive human blood cancers. Now, a research team at Lund University in Sweden has uncovered a completely new mechanism that controls how proteins are produced to direct stem cell function.

The receptors that sense the Earth’s magnetic field are probably located in the birds’ eyes. Now, researchers at Lund University have studied different proteins in the eyes of zebra finches and discovered that one of them differs from the others: only the Cry4 protein maintains a constant level throughout the day and in different lighting conditions.