Sex is necessary for many things, including generating genetic variability. However, it reduces the biodiversity of the species. Why? Among other things, because the greater the genetic variability, the faster new species are generated, but each of them has a low number of individuals, which implies that they have a greater probability of becoming extinct.
A study published by scientists at Harvard University has confirmed that during the industrial revolution natural selection favored dark butterflies, since they could be better camouflaged in soot.
The rupture today, for the fifth time since 1988, of the well-known Argentine Perito Moreno glacier was a natural spectacle that few could enjoy, since it occurred around four in the morning and in the middle of a strong storm. The rupture of the glacier, which had begun the day before, attracted the attention of more than 1,800,000 people who followed the event through the Internet.
The Spanish Ornithological Society (SEO / Birlife) has chosen the rattle (Coracias garrulus) as the bird of the year 2012. The decline in its populations, around 40 percent in recent years, and the threats to the habitats occupied by This species has led it to be included in the category of "vulnerable" in The Red Book of the birds of Spain.
How do you live at almost 2,000 meters depth? A team of Spanish and Portuguese researchers has found new species of arthropods that are capable of living in such extreme conditions. These subterranean animals inhabit the deepest cave in the world, near the Black Sea, and measure between 1 and 4 millimeters. Its discoverers publish the results in the journal Terrestrial Arthropod Reviews.
An expedition from the Wildlife Conservation Society (WCS) entered a protected area in the tropical Andes of Peru to study its biodiversity. As a result, 365 species so far undocumented have been cataloged in the park, including plants, insects, birds, mammals and reptiles.
Sea turtles can sense the Earth's magnetic field and use it to establish geographic maps that allow them to migrate between their home beaches and forage areas. These are the results of a study carried out by the Autonomous University of Mexico (UNAM) that is published in the journal Advances in Bioscience.
They provide oxygen, protect the soil from erosion, give us food in the form of fruits, seeds and roots, adorn our houses, provide cork, medicine and paper ... plants are fascinating beings without which our life would not be possible in the Land. For this reason, on May 18 the first International Day of Fascination for Plants will be celebrated.
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.
