Research Articles

How Car-Dependent Grocery Trips Turn Into Food Waste

How car-based supermarket runs encourage overbuying and food waste in the U.S—and how bikeable, dense neighborhoods flip the script.

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Cycling and Mental Health: How Two Wheels Protect Your Mind

How everyday cycling reduces depression, anxiety, and stress—and how small safety upgrades like lights and loud horns help more people ride.

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Cycling for Physical Health: Turning Everyday Trips into Exercise

How everyday cycling improves heart, metabolic, and musculoskeletal health—and how simple safety upgrades like lights and car-horn-loud bicycle horns make it easier to ride consistently.

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Hövding Airbag Bike Helmets: Rise, Fall, and What Comes Next

A deep dive into Hövding’s airbag ‘invisible helmet’ for cyclists: how it works, what safety testing found, why it was pulled from the market, and how the brand is being revived.

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Sex Differences in Driver Risk and Behavior

What the evidence actually shows about male and female drivers: exposure, risk-taking, crash rates, injury vulnerability, and how much of the gap is culture versus biology.

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Why Women in the US Don't Bike as Much as Men

In Utrecht, women ride bikes as much as, or more than men. But in Chicago, men dominate the bike lanes. The difference isn’t culture or biology; it’s how the streets are built.

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Big Cars, Small Freedom

How oversized SUVs and pickup trucks are sabotaging walkable cities, safety, and climate — and why we need to deflate the big-car arms race.

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Cycling for Environmental Health: Air Quality, Noise, and Population-Level Benefits

How shifting everyday trips from cars to bikes cuts air pollution, reduces harmful noise, and delivers outsized population-level health benefits.

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Sleep, Quiet, and Recovery: How Bikes Give Our Nervous Systems a Break

How traffic noise disrupts sleep, circadian rhythms, and stress recovery—and how cycling and quiet transit can help restore nightly recovery.

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Is the Hornit Enough to Keep You Safe?

A short, practical review of the Hornit siren-style bike horn, and why a car-horn-like option such as the Loud Mini can work better in real traffic emergencies.

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