Diseases, Conditions, Syndromes

WHO estimates 90% have some resistance to Covid

The WHO estimated Friday that 90 percent of the world population now had some resistance to Covid-19, but warned that a troubling new variant could still emerge.

Other

Hisss and hers: When women are best at spotting snakes

Women who have just finished ovulating are better at detecting snakes than at other times of their menstrual cycle, according to an unusual study that sheds light on in-built reflexes for survival.

Neuroscience

Brain's alertness circuitry conserved through evolution

Using a molecular method likely to become widely adopted by the field, researchers supported by the National Institutes of Health have discovered brain circuitry essential for alertness, or vigilance – and for brain states ...

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