February 27, 2014

Calvin Klein: Catnip for Big Cats

A weekly newsletter featuring the biggest ideas from the smartest people

Which cologne or perfume makes big cats go absolutely wild? Researchers refuse to say, because they don’t want humans testing it out and encroaching on the natural habitat of wild cats any more than they already are. But Calvin Klein’s cologne Obsession for Men is certainly a favorite.

Cats of all sizes are extremely sensitive to smell–it’s one way they communicate. And a whiff of this Calvin Klein cologne made some big cats behave as though they’ve just been sprinkled with catnip. Watch the video from National Geographic.

Image credit: DrBartje/Flickr

A weekly newsletter featuring the biggest ideas from the smartest people

Collage of geopolitical symbols, featuring a close-up of a man's bald head, China's flag, a globe highlighting Taiwan, and circuit patterns.

The Present

Why the USSR and China fell behind the US in the Chip Cold War

Both nations made missteps, but China still has a chance to make up lost ground.

Person examining a petri dish with tweezers, holding small colored objects, against a dark background.

Health

Are microplastics really destroying our health?

They’re in our brains, hearts, and blood — but what are they doing to us?

Collage showcasing a stratospheric balloon soaring over Earth and a close-up of fingers, with "The Nightcrawler" emblazoned at the top, capturing the spirit of a creative renaissance.

Business

How AI is ushering in a creative renaissance

Welcome to The Nightcrawler — a weekly newsletter from Eric Markowitz covering tech, innovation, and long-term thinking.

Two colorful cells with purple nuclei, green cell edges, and radiating filament structures against a black background.

Health

When muscles work out, they help neurons to grow

The findings suggest that biochemical and physical effects of exercise could help heal nerves.

Two people viewed from behind against a blue sky, one wearing a pink top and the other an orange top, share a moment of quiet solace as the person in pink rests their head on the other's shoulder. It’s a serene scene that hints at healing and support after trauma.

Neuropsych

3 emotional intelligence tips for helping a friend in a rough patch

Listen, set boundaries, and point them where to go.

Up Next

De-Criminalizing Heroin Addiction

Heroin addiction continues to receive media attention following the death of actor Philip Seymour Hoffman. His tragic overdose introduced America to the fact that heroin addicts do not fit any […]