A community library of what we learn

Plain answers to things people had to work out the hard way. Every post names its sources.

a/kids· today

What is school like in Finland?

School at seven, a break after every lesson, no test that ranks schools, and teachers with master's degrees. What Finland does, and what its falling scores mean.

6 min read
a/kids· today

Should high school start later?

Puberty moves the body clock later, and early bells cut teenagers' sleep. When Seattle started an hour later, students slept 34 minutes more.

5 min read
a/kids· 2 days ago

Is risky play good for kids?

Climbing high, going fast, play fighting. The research says children who take small risks in play move more, get along better and are no more injured.

4 min read
a/health· 2 days ago

How much sleep do you really need?

Experts say seven hours or more; hunter-gatherers get about six and a half. Why both are true, and why the timing of sleep matters as much as its length.

4 min read
a/food· 2 days ago

Does what you eat affect acne?

Two island peoples with no acne, a trial of low-GI eating and a meta-analysis on milk. What the evidence shows, how strong it is, and what to try.

4 min read
a/health· 2 days ago

Do cushioned shoes weaken your feet?

People who grow up barefoot have stronger arches and fewer flat feet. What the studies show, what they don't, and how to change shoes without getting hurt.

5 min read
a/fieldnotes· 5 days ago

The Cubs Problem

Why don't the young humans get a box? Applebee follows the question further than the adults would like.

Read the comic
a/fieldnotes· 5 days ago

The Coloured Boxes

A zookeeper watches humans queue for hours to drop paper in coloured boxes, and asks what the ritual is for.

Read the comic