On Wednesday's Houston Matters: Two people are confirmed dead and 30 were hospitalized in what La Porte officials called a "mass casualty" incident at a LyondellBasell chemical plant Tuesday night in unincorporated Harris County. We get the latest from News 88.7's Katie Watkins.

Also this hour: The CDC is now recommending vaccinated people wear masks in certain situations. We discuss what this change of course means and learn when exactly people who've been vaccinated should wear a mask.

And, with news that Simone Biles pulled out of the Olympic gymnastics finals due to mental health concerns, Olympic track and field competitor Bryce Deadmon of Texas A&M discusses the unique challenges athletes are facing at these games.

Plus: We discuss the latest news in our weekly political roundup.

Then, we continue our series on sports in the summer Olympics with a look at archery in Greater Houston.

And Houston-native country musician Rodney Crowell talks about his career ahead of a concert Thursday at The Heights Theater.

MORE: Rodney Crowell Performs on Skyline Sessions