Here’s a look at the top stories making headlines on the “CBS Evening News with Norah O’Donnell.” Source

The rapid spread of the Delta variant of the coronavirus has promoted health officials in Los Angeles County to urge mask-wearing indoors, even if people are fully vaccinated. Jamie Yuccas has the latest. Source

Thousands of abandoned wells in Pennsylvania can be found in the woods, along riverbanks, in people’s yards and even inside their homes. Source

Activists are calling for organizers to make events accessible for the disabled community even as they go virtual. Source

At least 12 people have been confirmed dead as of Tuesday evening. Source

Walmart said it will sell its own brand of analog insulin that costs up to 75% less than competing products. Source

The heat wave in the West has shifted slightly, bringing record-breaking temperatures to Montana and Idaho. CBS’s Lilia Luciano reports from Seattle and CBS News meteorologist and climate specialist Jeff Berardelli joins CBSN to explain how this “unprecedented” heat wave happened. Source

While it’s not clear what caused the building to collapse, there is concerning new information about possible structural damage. Source

Raffensperger told CBSN’s Tanya Rivero on Tuesday that he sees “absolutely no merit” in the lawsuit and insisted there is “record voter turnout” in the state. Source

The measure passed in the House last year but stalled in the Senate, which was then controlled by Republicans. Source