Year in review: Woes of artificial lighting add up for wildlife
Streetlights and other illumination disrupt defense, mating
![wallaby](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2015/12/122615_18_feat.jpg?fit=860%2C460&ssl=1)
DARK DAYS Artificial light disrupts insects' and animals' normal rhythms, including those of this Tammar wallaby, scientists found this year. At night, Tammar wallabies living on a naval base faced 10 times the light intensity of peers in the bush.
K. Robert