News
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Math fears subtract from memory, learning
In a study of college students, high levels of anxiety about taking mathematics tests interfered with memory processes needed to perform difficult arithmetic problems.
- Animals
Microbe lets mite dads perform virgin birth
A gender-bent mite—in which altered males give birth as virgins—turns out to be the first species discovered to live and reproduce with only one set of chromosomes.
- Earth
Ozone flares with fireworks festivities
Holiday fireworks and sparklers trigger ozone-generating chemical reactions in the lower atmosphere.
- Health & Medicine
Critical Care: Sugar Limit Saves Lives
Strictly controlling blood-sugar concentrations in critically ill patients can reduce deaths by a third.
