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Is Climate Change Supercharging El Niño?

CHICO HARLAN

As a new, potentially record-breaking El Niño begins, researchers are vigorously debating whether climate change is driving the phenomenon’s intensity.

Wordle’s Hard Mode Is Actually Easier, 730 Million Games Show

TONI MONKOVIC, EVE WASHINGTON AND TOM GIRATIKANON

As the game turns 5 years old, the data reveals that while standard-mode players have much more freedom, they’re not making the most of it.

Celebrate Father’s Day with seven whimsical and weird animal dads

From tiny hamsters to giant salamanders, here are some of the most unusual examples of fatherhood across the animal kingdom

How becoming a dad changes men’s brains

Fathers show changes in some of the same brain areas as mothers, but the effect of parenthood on dads isn't nearly as well studied

Can GLP-1s boost testosterone levels?

Preliminary study finds that testosterone levels increase or stabilize in people taking GLP-1 medications

Cities and Schools Are Testing Wastewater for Illicit Drugs

JAN HOFFMAN

The White House recently endorsed monitoring sewage for evidence of drug use. Critics fear such efforts could violate privacy and stigmatize neighborhoods.