Joshua Partlow

• National

The workers where the accused gunman lived and allegedly killed four were living in squalor, local officials said, a charge disputed by the farm's owner.

• National

Prosecutors charged a California agricultural worker with seven counts of murder following Monday’s shooting rampage at two farms in the Half Moon Bay area.

• Environment

Historic shortages of Colorado River water and a bitter political feud have conspired to leave a Scottsdale, Ariz., neighborhood in a desperate scramble to find enough water to sustain themselves.

Local officials warned the precise impacts or timing of potential flooding, road closures or evacuations are difficult to predict.

• Climate

Abundant precipitation from a series of atmospheric rivers has raised California reservoirs, although large parts of American West still face water shortages.

• Environment

As Arizona's water supply from the Colorado River dwindles, it is studying a $5 billion project to desalinate ocean water in Mexico and pump it 200 miles across the border.

• Environment

Those responsible for divvying up the Colorado River's dwindling supply are warning that unprecedented shortages could be coming to farms and cities in the West.

The experience of Lytton — a town in British Columbia that suffered a disastrous fire last year and has yet to rebuild — shows how adapting to climate threats, and its slow and arduous recovery phase, can inflict its own wounds.

• Climate

A once-unfathomable scenario — Lake Powell dropping to historic lows and shutting down power generators that serve millions — could start as soon as July.