Alexa, from Amazon, can now express joy or disappointment

The voice of Amazon’s voice assistant Alexa is now able to express enthusiasm or disappointment when she speaks English. Three different intensity levels are proposed for each of these two…

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Botswana, our ancestral homeland

Mankind is said to have originated in a southern African region of northern Botswana, according to a study by Australian and South African scientists published inĀ Nature. The work done by…

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Why is the volcano in Guatemala so deadly compared to that of Hawaii?

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…

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New theory on the origin of lava

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…

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Fertilized sperm 50 years ago still viable

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…

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