Response of juvenile Limulus polyphemus to stimulation of the ventral photoreceptors

Stimulation of the ventral photoreceptors of first-year juvenile horseshoe crabs by shining light on them from below, through a transparent substrate, reliably induced the animals to flip over, reorienting to keep the stronger light (ratio approx. 2:1) on the top of the body. Two-year-olds ignored the same stimulus, but did react to a much stronger light source. The results indicate that the smaller juveniles rely on their ventral photoreceptors to stay upright, having no known organs of balance

Survey of opinions on legalizing bicycling

A study was conducted to determine the opposition and support for implementation of a bicycle path along the lakes of Sortedam and Peblinge found in Copenhagen, Denmark. Surveys of area residents, pedestrians and bicyclists revealed the profiles of advocates and opponents of bicycling. Typically, opponents were 43 years old living directly along the Dosseringen who generally used the area for recreation. The typical supporter was 34 years old, active, and used the Dosseringen for travel and enjoyment of the area