Current scientific evidence does not justify the use of medicinal cannabinoids to treat six mental health conditions, a new meta-analysis conducted by Australian researchers concludes. Cannabinoids do not seem to be able to relieve depression, anxiety disorders, attention deficit hyperactivity…
Human activity and the opening of the landscape through clearing intensified soil erosion about 4,000 years ago, well before industrialization. This is the conclusion reached by European and Canadian geologists whose work aims to determine changes in soil erosion over…
The lava flowing from volcanoes is not fed by the magmatic chambers, say British volcanologists, who question the classic theory of volcanic eruptions. The work of Professor Matthew Jackson, expert in geological fluid mechanics, and his colleagues at Imperial College…
Earth has officially entered a new chapter in its history, the age of the Meghalayan, the third and last period since the beginning of the Holocene era nearly 12,000 years ago, says the International Stratigraphy Commission (CIS, the organization responsible…
The sperm of four rams stored since 1968 in an Australian laboratory has been thawed and successfully used to inseminate 34 ewes. Researchers Simon de Graaf and Jessica Rickard of the University of Sydney say it is the oldest sperm…
A genetic mutation recently discovered by Finnish scientists reduces fear and anxiety, and increases social interaction in mice. Geneticist Heikki Tanila and colleagues from the University of Eastern Finland used a genetic manipulation technique to remove the P4h-tm gene from…
Despite the continuing eruption of Hawaii’s Kilauea volcano for more than a month, the recent eruption of the Fuego volcano in Guatemala has been much more deadly, with the number of victims now exceeding 100 deaths. Why are their eruptions…
The national park surrounding the Hawaiian volcano Kilauea was closed late Thursday, fearing that the steam that accumulates inside does not end up blowing up the mountain. Such an explosion could throw rocks, big and small, several kilometers in the…