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Sao Paulo, Brazil - November 26, 2015: Intense traffic in the Consolacao avenue, Sao Paulo, Brazil. It shows the dynamics of the traffic in that busy spot.; Shutterstock ID 347285747; purchase_order: -; job: -; client: -; other:

This week鈥檚 new questions

Is it better to walk along a road for exercise or catch a bus to avoid air pollution? And why do we 鈥榞host鈥� people?

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3D illustration of A space station flies through the vastness of space. Spacecraft, spaceship design. High quality digital space sci-fi art in 5K - realistic visualization. Render; Shutterstock ID 2565680455; purchase_order: -; job: -; client: -; other: -

What would the surface of a neutron star look like?

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2XHMJ3E Mixed breed dog running through grass with large stick in mouth

Why do dogs bring back a stick if you throw it?

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RBJEJN Woman talking to her baby lying on a bed at home. Mother caring and pampering her baby.

Why do we speak to babies and pets in cute, silly voices? Part 2

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Headshot of a 13 year old teenage girl with purple hair and braces. She is standing outdoors with buildings out of focus in the background. She is rolling her eyes and frowning slightly, a typical adolescent.

This week鈥檚 new questions

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Ripples in the pond; Shutterstock ID 356810405; purchase_order: -; job: -; client: -; other: -

What would happen if water had no meniscus or surface tension?

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I want to warm up fast, should I put on聽my trousers or my top first?

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Exposures of clocks, watches, Time-Pieces of various kinds and periods. Photograph ?? Santosh Verma

Why are there 60 seconds in a聽minute and 60 minutes in an hour? part 2

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BCM7JY Rainbow above rolling farmland on the edges of Dartmoor National Park Devon England Spring April 2009. Image shot 2009. Exact date unknown.

This week鈥檚 new questions

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M5BFWD A man playing a piano outdoors in a public square beside False Creek and the Cambie Street bridge in downtown Vancouver, British Columbia, Canada.

Does left-handedness or right-handedness make for a better pianist?

Our more musical readers chime in on this one, and agree that how early you start playing is key

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Why do we speak to babies and pets in cute, silly voices?

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Is short-sightedness found in other animals? Part 2

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This week鈥檚 new questions

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Does Earth鈥檚 mass remain constant, or is it slowly rising or falling?

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