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Nature online Science brain teasers for smart cookies

14/09/2026

Can you train a cat to stand on command? Apparently, yes!

We tried it in five very small steps:

Step 1: Please, just show up! I have treats.
Step 2: Stay in the right place.
Step 3: Lift the chin for a treat.
Step 4: Experience partial liftoff. 🚀
Step 5: Paws off the payload.

About two weeks later, we had something remarkably close to a trained cat.

05/09/2026

Cell theory in one minute

Hooke looks at cork. Leeuwenhoek finds microbes. Brown finds the nucleus. Schleiden checks plants. Schwann checks animals. Virchow ties it all together.

A few centuries of cell biology in about a minute.

31/08/2026

We use letters every day without thinking about how strange they really are. Can you trace their journey from rock art to your smartphone?

How Many Laws of Physics Can You Spot?Think physics is just a bunch of boring formulas in a textbook? Not even close. Lo...
25/08/2026

How Many Laws of Physics Can You Spot?

Think physics is just a bunch of boring formulas in a textbook? Not even close. Look around you!

A ball falls? Gravity.
You see yourself in a mirror? The law of reflection.
A straw looks bent in a glass of water? Refraction.

What else can you spot in this picture? Now look around the room. Physics is everywhere. What can you find?

Something is definitely not quite right here.What did the artist mix up?
21/08/2026

Something is definitely not quite right here.
What did the artist mix up?

A is for… How many things beginning with A can you find in this picture?
17/08/2026

A is for… How many things beginning with A can you find in this picture?

Can you spot the Horsehead, the Butterfly, the Pillars of Creation, and the Hourglass? Many cosmic nebulae and structure...
14/08/2026

Can you spot the Horsehead, the Butterfly, the Pillars of Creation, and the Hourglass?

Many cosmic nebulae and structures have names inspired by their shapes — and some are surprisingly easy to recognize once you know what to look for.
This is one of the visual challenges from my interactive lesson on the birth and death of stars.
How many can you find without asking ChatGPT?

True.
12/05/2026

True.

01/05/2026

A moment from my science class.

Two brothers. Zoom.
They spent the entire session critiquing each other’s answers.

“That’s wrong.”
“You forgot this.”

At some point, I asked:
“Are you two friends or rivals?”

They paused. Looked at each other. Then hugged.

“We’re brothers.”

Who’s telling the truth and who’s lying?
28/04/2026

Who’s telling the truth and who’s lying?

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