Rats can estimate their timing accuracy

Thanks to their capacity for introspection, human beings are able to estimate the duration of their actions. When they perform a task—especially a time-based task—they can evaluate their performance and correct themselves ...

Earth's water was around before Earth

To understand how life emerged, scientists investigate the chemistry of carbon and water. In the case of water, they track the various forms, or isotopes, of its constituent hydrogen and oxygen atoms over the history of the ...

Unveiling the secrets of biofilms

Most bacteria have the ability to form communities, biofilms, that adhere to a wide variety of surfaces and are difficult to remove. This can lead to major problems, for example in hospitals or in the food industry. Now, ...

Before horses, ass hybrids were bred for warfare

The 4,500-year-old iconography and texts from Mesopotamia show that the elite used equids for travel and warfare; however, the nature of these animals remained mysterious. In Science Advances (January 14, 2022), a team from ...

Reducing air pollution: Policies that pay off

Reducing fine particle mortality in a conurbation by two-thirds could be achieved at a cost that is much lower than the value of the societal and economic benefits obtained, according to a study by a multidisciplinary team ...

Experiment reveals social conventions between baboons

A research team from the CNRS and Aix-Marseille Université has demonstrated that members of a group of baboons can establish shared social conventions—in this case, by all agreeing on how to solve a problem in order to ...

When variations in Earth's orbit drive biological evolution

Coccolithophores are microscopic algae that form tiny limestone plates, called coccoliths, around their single cells. The shape and size of coccoliths varies according to the species. After their death, coccolithophores sink ...

Tempera painting probed on the molecular scale

In contrast to the oil painting technique that supplanted it at the end of the 15th century, tempera painting, practiced on wood panels, walls or canvas has received little attention on the physico-chemical scale. This painting ...

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