Can people and wolves that are returning to the forests of Europe after years of absence live side by side and use one space? How to avoid or alleviate conflicts between predators and animal breeders? An international team of experts is looking for a recipe for peaceful coexistence.
Strong UV radiation penetrated the atmosphere of the young Earth that did not contain oxygen, and thus - ozone. In such conditions, the first biomolecules formed: the basic building blocks of life. They still exist, forming DNA and RNA. Dr. Rafał Szabla from the Institute of Physics of the Polish Academy of Sciences in Warsaw conducts research on the influence of light on the chemistry that could produce biomolecules.
Researchers, including a team at the Jagiellonian University, have managed to build a nanometer-sized protein cage, in which fragments of proteins are coordinated with gold ions. Researchers obtained a "mathematically impossible" solid - an almost regular Archimedean polyhedron. The solution published in Nature can be used, for example, to deliver drugs to cells.
Conflicts between humans and large species of animals such as elk or wolf do happen, but they are not dramatic and we know how to mitigate them, says Prof. Rafał Kowalczyk, director of the Mammal Research Institute of the Polish Academy of Sciences in Białowieża. He adds that the wolf has important functions in the ecosystem and is an ally of man.
Despite their small sizes, insects sometimes cover considerable distances, but their migration routes are difficult to monitor. Polish scientists have a way to do it. They identify the DNA of plants that, for example, butterflies transport on their bodies, and on this basis they track the routes of their long journeys.
Rotifers, nematodes and tardigrades are invertebrates, in which suspension or extreme slowdown of the aging process occurs in the state of anhydrobiosis, that is, life activity reduction due to the lack of water. Understanding their life strategies can be crucial for medicine, biotechnology or astrobiology, researchers say.
Butterflies, spiders and scorpions from almost 100 million years ago can be found in Burmese amber, exceptionally rich in inclusions. Trapped in amber, they look alive. Although they can not be used to obtain prehistoric species` DNA, they has become a window to the world of the Cretaceous period.