Lions, tigers and other mammals are staying awake at night to avoid human beings, a new study finds.Scientists have long known that human activity can lead to changes in nature.Many mammals may move around less or travel to distant places to avoid contact with people.By being awake at night, mammals can also be on guard against possible attackers and spend less time looking for food.The latest research found even activities like hiking and camping can frighten animalsand cause them to become more active at night.Kaitlyn Gaynor of the University of California, Berkeley led the study.She said, It suggests that animals might be playing it safe around people.We may think that we leave no trace when we're just hiking in the woods,but our mere presence can have lasting consequences.She and her team of researchers examined 76 other studies involving 62 species on six continents.
