Five Best Ideas of the Day: January 6, 2020 - The Aspen Institute

Injecting the flu vaccine into a tumor triggers the immune system attack it.

John Timmer in Ars Technica
Could we engineer ‘tidal cities’ and let the oceans in?

Nathanael Johnson in Grist
Philosophy is a public service.

Jonathon Keats in Nautilus
Some kind of learning lights up the whole brain.

Johns Hopkins Medicine
This new tomato is ideal for urban gardening — or growing in space.

Cold Spring Harbor Lab