Just four plants - wheat, rice, maize and soybeans - account for 60 percent food produced worldwide. In the face of catastrophic climate change, a larger diversification of cultivated plants is needed, says Prof Sayed Azam-Ali from the University of Nottingham, UK.
Why do seeds not germinate in the last hot summer day? How do they "know" they should still wait? This is one of the plant genes\' doing. It is being studied by researchers from the Institute of Biochemistry and Biophysics PAS. On the example of this gene they draw important conclusions about information processing in the cell.
It is difficult to conclusively state how the change of time affects human health; the results of the study are mutually exclusive - told PAP Dr. Dorota Wołyńczyk-Gmaj, psychiatrist, sleep disorders expert. However, since there are doubts in this matter, it is probably not worth the risk - she added.
Altruism among chimpanzees varies depending on status and sex, it is also an individual trait. These are the conclusions drawn from the two-year study of these apes - the closest evolutionary relatives of man - by psychologist Prof. Maciej Trojan from Nicolaus Copernicus University in Toruń.
How is it possible that life exists on Earth? And that from ordinary elements compounds have formed that can multiply and store information? Simulations on supercomputers help test the hypotheses that explain these phenomena - told PAP bioinformatics expert Prof. Jacek Błażewicz.
Researchers have designed molecules that start spinning like helicopter rotors under the influence of UV light. Last year\'s Nobel Prize in Chemistry was awarded for research on molecular motors. Now it turns out that you can see this movement with your own eyes - under an optical microscope. This was achieved thanks to the work of a Polish researcher, among others.
After extreme exertion - for example, one hour run until exhaustion - the level of circulating free DNA in the blood dramatically increases. This marker is associated with tumours, inflammations or cell necrosis. Research of scientists from Łódź sheds new light on this issue.