Sirtuins, proteins believed to have the ability to significantly increase the life expectancy of a number of organisms, do not actually affect the longevity of living things, according to a new study published in the journal Nature.
Although jellyfish do not have the visual acuity of fish, the increased water content in their tissues has given them a large gelatinous body that makes them tremendously effective hunters. It is the conclusion reached by Spanish and American researchers, who have revealed the evolutionary keys of jellyfish in a work published in the journal Science.
The biological bases of the female organism have been the subject of intense scientific debate in recent years. Many hypotheses have been proposed from evolutionary biology, for example that it is an adaptation that influences the choice of a partner, strengthens the links between both sexes or helps introduce sperm into the uterus.
Women who use the pill to prevent pregnancy may experience memory disturbances, according to a study by the University of California at Irvine (USA). Specifically, this drug enhances emotional memories, but reduces the ability to retain details.
A new study published in 'PLoS Biology' reveals that the 'Phreatichthys andruzzii', a blind fish from Somalia (Africa), has a circadian clock that is governed by an extremely long period (up to 47 hours), and that it accelerates with the temperature increase.
Scientists from the Sanford-Burnham Medical Research Institute in La Jolla, California (United States), have analyzed how the interaction between two cellular processes, autophagy and lipid metabolism, influences the life of the worms 'Caenorhabditis elegans' .
Are you lazy to play sports? Is it hard for you to get up from the couch to go to the gym? You may have lost two key genes, according to a study from McMaster University (Canada). To reach this conclusion, the researchers worked with mice, some of which lacked two muscle genes that control the AMPK protein, which is activated when we exercise.
Female marmots that share the uterus with their male siblings during gestation absorb testosterone and have masculinized behavior after birth, according to a study published in the journal Biology Letters.
Danni Büchner is invited to Sam Dylan's Halloween party. But the "Goodbye Germany" emigrant has no desire for many other party guests. And find clear words.
