6,284 articles mezi dny 1.5.2021 a 31.5.2021

Iceland's glaciers lose 750 km2 in 20 years

Iceland's glaciers have lost around 750 square kilometers (290 square miles), or seven percent of their surface, since the turn of the millennium due to global warming, a study published on Monday showed.

Unravelling the mysteries of seasonal reproduction in lynx: New insights into mechanisms of corpus luteum in cats

Most of the existing 39 cat species are threatened. Successful reproduction under breeding conditions is hindered by a lack of knowledge and appropriate techniques. But now scientists from the German Leibniz Institute for Zoo and Wildlife Research (Leibniz-IZW) have succeeded in testing the influence of selected hormones on cell cultures of domestic cats and translated the methods to wild cat...

Researchers discover that a mechanical cue is at the origin of cell death decision

In many species including humans, the cells responsible for reproduction, the germ cells, are often highly interconnected and share their cytoplasm. In the hermaphrodite nematode Caenorhabditis elegans, up to 500 germ cells are connected to each other in the gonad, the tissue that produces eggs and sperm. These cells are arranged around a central cytoplasmic "corridor" and exchange cytoplasmic...