April 24th marked the 50th anniversary of Earth Day, the creation ofis considered as the beginning of the modern environmental movement by the (major) of people.
Many people continue to stay at home during the recent months. As a result, people are making less pollution, and the air has become (clean).
Smog stopped (cover) New Delhi, one of the world's most (pollute) cities. Nitrogen dioxide pollution in northeastern of the United States (drop) by 30 percent up till now. Stars seem more visible at night.
Researchers have been observing sharp drops in traditional air pollutants (污染物), such as nitrogen dioxide, smog and tiny particles. These kinds of pollutants kill up to 7 million people a year worldwide.
"Human activity usually makes it difficult for sea turtles (leave) their eggs on sandy coastlines. Nesting turtles need to be undisturbed. After they come out of their eggs, baby turtles might have difficulty finding their way to the water because of bright lights. But the lights mostly off and people staying at home, the sea turtle nesting (seem) much better at present," Godfrey said.
"There's still a hope left for wildlife," Godfrey said.
