🧪⚒️New episode - Lindy Elkins-Tanton on the origin of Earth's water. Only about 0.02% of the Earth is water, but even that's been a puzzle as Earth formed within the snow line where no liquid water would have been present. Isotopic analysis provides the clues to resolve this apparent paradox.

Many want Altadena to remain the same quirky community that attracted art studios, small horse ranches and mom-and-pop stores before the Eaton Fire.

But whether that can be accomplished while keeping luxury developers at bay remains an open question.

President Donald Trump signed an executive order seeking to boost proof of citizenship requirements for voter registration, which critics say could disenfranchise poor and older voters who don’t have easy access to citizenship documents like passports or birth certificates.