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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.

Ebola outbreak latest, World Cup heat risks and dad brains

What's going on with the Ebola outbreak, how the World Cup is dealing with rising temperatures, and how becoming a father can change your brain

Got a tick bite? Here’s what to do and when to seek treatment

Knowing what kind of tick bit you and where you got it can help inform next steps

Will NASA’s SkyFall Mars helicopter fleet sink science at the Red Planet?

Mars researchers are wrestling with the potential costs of a flashy new NASA mission to the Red Planet

Trump’s FEMA Nominee Calls Staff Cuts a ‘Challenge’ for Disaster Agency

SCOTT DANCE

Cameron Hamilton, who briefly led the agency on an acting basis last year but was fired for contradicting the president, also said he would get money out to states faster.

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.

Interstellar Comet 3I/ATLAS is almost as old as the universe itself

The evidence is mounting: this interstellar visitor is even older and weirder than anyone thought

Stem cells banish severe autoimmune disease for 15 years

Two people were the first to receive the therapy for a condition that damages the spinal cord and optic nerve