Here are the news items:

• For the first time, scientists have captured detailed images of key receptors in the hippocampus, that deep part of the brain where memory and learning happen.
• The manipulation of mRNA has proven critical to the fight against COVID-19 — and it just might help treat heart defects, HIV, and cancer, too.
• President Biden’s executive order to beef up the government's digital defenses is great, but how about going on offense?
• Digital advertising growth has boosted the profits of giants like Facebook and Google. Now it's reaching media and news sites, too.
• A new poll shows former Brazil president Lula da Silva would crush the incumbent Jair Bolsonaro in an electoral matchup.

PLUS: John and Rebecca discuss Facebook’s latest plans for its cryptocurrency and what it could mean for small businesses.

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