Four ways to curb light pollution, save bugs

Artificial light at night negatively impacts thousands of species: beetles, moths, wasps and other insects that have evolved to use light levels as cues for courtship, foraging and navigation.

City moths avoid the light

The globally increasing light pollution has negative effects on organisms and entire ecosystems. The consequences are especially hard on nocturnal insects, since their attraction to artificial light sources generally ends ...

Toward a safer material for artificial muscles

Whether wriggling your toes or lifting groceries, muscles in your body smoothly expand and contract. Some polymers can do the same thing—acting like artificial muscles—but only when stimulated by dangerously high voltages. ...

Do urban fish exhibit impaired sleep?

Melatonin controls the body clock—high melatonin levels make us feel tired in the evening. However, the hormone also plays an important role in animals' biological rhythms. Artificial light at night—light pollution—can ...

How exposure to irregular light affects plant circadian rhythms

Scientists know that plants can actually "sense" day length, and "schedule" their growth to coincide with specific environmental conditions. These natural events are based on the circadian clock, a 24-hour system found in ...

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