Birds become good at avoiding danger by eavesdropping on the alarm calls of other birds—and the learning occurs without even seeing their peers or predators. Christopher Intagliata... -- Read more on ScientificAmerican.com
Volcanic tornadoes, choking fog, “laze,” lightning, hail, waterspouts and even frost are created above hot eruptions -- Read more on ScientificAmerican.com
Volcanic tornadoes, choking fog, “laze,” lightning, hail, waterspouts and even frost are created above hot eruptions -- Read more on ScientificAmerican.com
samedi 21 juillet 2018 par Tobias Richter, Amaia Arranz-Otaegui, Sapiens — The Sciences, Evolution
Archaeologists have found tiny pieces of ancient bread from hunter-gatherers that predate agriculture by about 4,000 years -- Read more on ScientificAmerican.com