News
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Planetary ScienceHigh Anxiety: Sudden solar flare highlights space risks
Measurements of energetic particles from an unusually strong solar flare that pummeled Earth early this year suggest that astronauts traveling or working in space might sometimes need to reach shelter within minutes of a warning.
By Sid Perkins -
AnimalsAnemone Wars: Clone armies deploy scouts, attack tidally
The first description of clashing armies of sea anemones has revealed unsuspected military tactics.
By Susan Milius -
EarthGender Measure: Pollutant appears to alter boys’ genitals
Infant boys who were exposed in the womb to modest concentrations of certain common plasticizers and solvents developed genital changes.
By Janet Raloff and Ben Harder -
Menstrual cycle changes the brain
Hormonal fluctuations over the course of a woman's menstrual cycle change the abundance of a type of receptor on nerve cells, which can change the cells' behavior.