nbclx January 25, 2021 7:30 am Cell Phones Are Polluting the Planet — Follow These Tips to Make Yours Greener Did you know that cell phones are among the world’s worst sources of pollution? Here are some tips for making your favorite possession better for our planet. US & World Videos 3:41 Sun will slowly chew away at the cloud cover this afternoon 2:39 Student protesters in Boston face new threats 2:04 Understanding the pushback against MBTA's zoning law 2:38 Boston will see some sunshine in the afternoon 1:17 Latest on the Karen Read trial: First responders testify