nature

Until now, paleoanthropologists considered that men domesticated dogs 16,000 years ago, but the discovery and subsequent analysis of the bones of a common ancestor of wolves and dogs that lived in Siberia 35,000 years ago suggests that probably the close relationship between humans and our friends the dogs began between 35,000 and 40,000 years ago.

A team of scientists from the University of Saint Andrews, in Scotland, has discovered that some species of raven have not only developed the ability to use sticks and stones as tools, but, like humans do, they keep them when they are not. they use. The study, published in the journal Proceedings of the Royal Society B, is the first to delve into the ability of some animals to treasure objects and avoid losing them.

It is not the first time that we have discovered that octopods have unique capabilities: from changing the color of their skin, their shape or even their texture, not only in order to camouflage themselves but also as a means of communication with their environment. Now, a new study by scientists at the University of California in Santa Barbara (USA) has concluded that octopus skin works like eyes.

The temperature has risen 2.5 ºC in the last half century in the Antarctic Peninsula, which is one of the areas of the planet most affected by global warming.

As with humans, a whale can be recognized by its voice, as a team of biologists who have just presented their findings at the Acoustical Society of America spring conference has discovered.

The common ancestor to the earliest known snakes was a nocturnal animal that lived in wooded areas of the southern hemisphere.

Does the existence of males in nature have a specific scientific cause? That's how it is. In the latest study developed by a team of scientists from the University of East Anglia (United Kingdom) and the Higher Council for Scientific Research (CSIC), it is established that sexual selection by females and manifest competitiveness between males causes an improvement in the genetic health of the species (eliminating toxic genetic mutations), thus balancing the fact that males are unable to procreate. The study has been published in the journal Nature.

The increase in ocean temperature due to climate change, changes in water chemistry - increased acidification - and infectious diseases are the main causes of the deterioration of coral reefs.