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Visualizing taxi flow

These three images by Kael Greco and Veronica Hannan, finalists in MIT's visualization challenge, depict relative taxi demand and supply (top two images) and how neighborhoods are connected by taxi use.

Location of excess taxi supply (teal peaks) and unmet demand (pink valleys) on a Friday night.

Location of excess taxi supply (teal peaks) and unmet demand (pink valleys) during a Monday morning rush hour.

A map showing neighborhoods connected by taxi use.

Images by Kael Greco and Veronica Hannan

Should you take probiotics to lower high blood pressure?

A new review of nine clinical trials published last Monday in the journal Hypertension that found taking probiotics led to moderate reductions in high blood pressure certainly looks promising, but the research has caveats.

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