Hello and welcome to the Intelligence from the Economist.

In London, I'm Jason Palmer.

And in New York, I'm John Fassman.

Every weekday, we provide a fresh perspective on the events

shaping your world.

In a lot of countries, the most widely prescribed treatment

for depression are SSRIs, drugs that regulate the amount

of serotonin in the brain.

But a sweeping new review suggests

there's actually little connection between serotonin

levels and depression.

And in most places, one of the last things

shock keepers do before go home for the night

is to lock up their goods.

But in Dakar, vendors' valuable plants leave their wares

unguarded.

We explore why and what that says about trust

in Senegal's capital city.

First up, though.

Today, the amount of gas flowing from Russia to Europe

through Nord Stream 1 will be cut by half to just 20%

of the pipeline's capacity.

...