Los Angeles has some of the cleanest air in the world with lockdowns in place. Source

A memo obtained by CBS News and sent to campaign allies and leading party activists outlines how the Biden team plans to continue sowing doubts about the president’s leadership. Source

Americans are Zooming and Slacking into work instead of driving. But digital technologies have a carbon footprint, too. Source

With roughly one-third of the world on lockdown, life is quieter these days – which is aiding scientists who measure earthquakes. “Sunday Morning” producer Sara Kugel talked with researchers about how reductions in background noise from human activity are helping us “hear” the Earth better. Source

Carbon dioxide on our planet is at its highest level in 3 million years. Why should we care, and what does it mean for our survival? CBS News meteorologist Jeff Beradelli explains — in 1 minute. Source

Clearly, shutting down economies is not an acceptable or sustainable way to achieve climate goals – but we can learn something from it. Source

More than 50,000 surgical masks will be donated to Chicago’s Cook County Jail, which has been hit hard by the pandemic. Source

The nationwide study was not a rigorous experiment, but with 368 patients, it’s the largest look so far at hydroxychloroquine. Source

Musical trio Major Lazer, led by producer and DJ Diplo, collaborated with Marcus Mumford of Mumford and Sons for the first time on the new song “Lay Your Head on Me.” The accompanying video features performers from 28 countries, all shot at home over the last month. Anthony Mason speaks with Diplo and Mumford and gets a first look at the video. Source

The proposed rule change would allow proxy voting “during a designated pandemic emergency.” Source