Usually, the farther away from the heat source, for example candle flame or stove, the cooler it gets. But it is different on the Sun. The solar corona is much hotter than the layers closer to the solar core. Scientists have long wondered why this was happening. Now they have shown that the solar corona can be heated by the so-called Alfvén waves.
Innovative cooling clothing and underwear, designed to protect mine rescuers against fire, static electricity and overheating of the body, have been developed by a Polish consortium, led by the Central Institute for Labour Protection - National Research Institute.
Millimetre-sized models of the human brain printed on a 3D printer? Scientists from Swedish Karolinska Institute are getting closer to producing them. These structures would facilitate studies of neurodegenerative diseases, pharmaceutical tests, and in the future also printing "spare parts" for the brain.
A lone, forgotten grave in a forest near Konstantynów in the Kraków-Częstochowa Upland. Archaeologists who excavated the bones say that the deceased was a young, well-kept man, shot in the head. His feet were bitten by wild animals. There were no objects or pieces of clothing near the remains. A mob hit perhaps?
Activating certain receptors in people suffering from irritable bowel syndrome can, among other things, prevent their bodies from becoming immunized to drug action. This may be a step towards creating a method of treatment of irritable bowel syndrome, not only mitigating its symptoms.
Volcanic eruption on the island of Thera thousands of years ago contributed to the collapse of the Minoan civilization and was a turning point in the history of Western civilization. However, the exact date of this event remains unknown. Scientists want to determine it by looking for "fingerprints" of the eruption in tree rings.
They brought knowledge of the potter's wheel, advanced ferrous metallurgy and coinage - the Celts arrived in the southern areas of the current Polish territory 2.5 thousand years ago and significantly influenced the history of the region - Dr. Przemysław Dulęba said in an interview with PAP.
To answer the most common question in archaeology - the origin of man - it is helpful to use the increasingly popular method involving the analysis of strontium isotopes. "You are what you eat" - comments on the mechanism of its action Prof. Zdzisław Bełka from the Isotopic Laboratory of A. Mickiewicz University in Poznań.
Solar radiation and toxic substances, to which we are constantly exposed, sometimes make DNA in cells break. Fortunately, cells are equipped with proteins that tirelessly patch up torn DNA strands. Through research, including studies of Polish researchers, we know more about the work of these cellular seamstresses.
Who would have thought that a mussel's life could be so dangerous? And yet it is! It turns out that life of river mussels - large freshwater molluscs - is not boring at all - says biologist Dr. Aleksandra Skawina from the University of Warsaw.