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…