What Philadelphia can learn from Atlanta's I-85 collapse

A heavily traveled segment of Interstate 95 remains closed indefinitely in Philadelphia after an overpass section collapsed on Sunday following a fiery tanker truck crash. Pennsylvania's transportation officials will probably draw lessons learned from a similar incident in Atlanta in 2017.

Why wildfire smoke is turning the moon red

Air molecules from the smoke in Earth's atmosphere cause light to scatter out most of the blue light, leaving the remaining red light to create a red glow on the moon. More red moons are likely as smoky skies continue.