Dragons exist not only in novels and legends. Mud dragons, or kinorhynchs, are miniature (1 mm or less) invertebrates. For millions of years, they have lived almost all over the world and everyone could meet them while walking on a sandy beach or sea bottom. A Polish researcher recently described eight new species.
Proteins that belong to the SelO family are found in humans, bacteria and plants, but their role has not been known. According to an American-Polish team of scientists, these proteins play a role in defending the cells against reactive oxygen species. The results have been published in the prestigious journal "Cell".
Beech martens appeared in the north-east of Poland very recently, in the last 40 years, according to new research on this species. "It is a big surprise, because the common view is that beech martens have been in our environment forever" - says Anna Wereszczuk from the Mammal Research Institute PAS.
100 years old birch and willow trees that are 20 cm tall? That`s what the forest looks like in the tundra! To see it well, you have to lie down, says tundra researcher Dr. Agata Buchwał. But due to climate warming, the average height of plants in the tundra increases, according to the latest research published in the journal Nature.
With the aid of simple theoretical models it is possible to build systems operating strictly according to the rules of classical physics, yet faithfully reproducing the predictions of quantum mechanics for single particles – even those that are the most paradoxical! So what is the real hallmark of quantum behaviour?