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Animals

Sperm on a stick for springtails

Many males of the tiny soil organisms sustain their species by leaving drops of sperm glistening here and there in the landscape in case a female chooses to pick one up.

Neuroscience

Thinking hard weighs heavy on the brain

A balance measures the tiny changes in force due to blood flow behind a person's thoughts.

Physics

Transfixing tetrahedrons

Dervishes are Sufi Muslims who represent the revolving heavens with their spinning dance.

Genetics

Life at the Speed of Light

Biology has come a long way from the days of mixing things in petri dishes and hoping something interesting happens.