On Sunday, the chatbot was updated to "not shy away from making claims which are politically incorrect, as long as they are well substantiated." By Tuesday, it was praising Hitler.

Yaccarino, a traditional business executive, was in many ways a strong foil to the mercurial and controversy-courting Musk. She did not cite a reason for her departure.

Ten years after the Paris Agreement, countries are lagging behind the goals they set to reduce emissions and avoid the worst effects of climate change.

In Hawaii, a climate settlement reached last year between the state and a group of youth activists has now led transportation leaders to commit to a plan to cut emissions down to zero by 2045.

There was little warning when floodwater from Guadalupe River surged through central Texas last week, killing over 100 people.

Europe recently downgraded the protected status of wolves, sparking concern among conservationists who warn this may undo decades of progress and lead to the species becoming threatened again.

Former Kerr County commissioner Tom Moser advocated for a siren warning system about a decade ago. He believes sirens could have saved lives had they been in place.

The governor and top emergency official in Texas are both members of a council advising the Trump administration on options for eliminating the Federal Emergency Management Agency.

On Tuesday, scientists held an event organized by House Democrats in which they stood in front of posters outlining their work — and the federal cuts that now threaten it.

College teams are showing off their innovations in solar car technology this week at a race in Bowling Green, Kentucky.