麻豆传媒

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FE11X8 Cyclist driving, at dusk, in a city street, with and without lights and safety clothing, bike safety, visibility at night

Which bicycle lights are safest and give the best visibility?

Our readers have lots of advice, but point out the importance of illuminating the road, as well as the cyclist 鈥� and of never wearing black

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2EXM9NK Hand Knuckle Finger Joint Crack. Fingers Snap

How can popped knuckles be so exceptionally loud?

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2JP8KPY Very tight parking in Italy with a small dented family car bumper to bumper squashed in next to two cars in a parking bay with only inches to move.

What is the shortest space a parked car can get out of? Part 2

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Asteroid impact event. Lateral sectioned view of an asteroid impact, similar to that which is thought to have caused the extinction of the dinosaurs around 65 million years ago. The impact took place at sea near the coast of the Yucatan Peninsula in Mexico, forming the Chicxulub crater (around 200 kilometres across). The impact threw trillions of tons of dust into the atmosphere and sent tsunamis (massive waves) around the globe, destroying coastal areas. Dust and water vapour in the atmosphere lowered global temperatures. Plant and then animal life began to die off. The dinosaurs never recovered, and mammals rose to become the dominant form of life.

This week鈥檚 new questions

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How Bulgarian yogurt could help us colonise Mars

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Tom Gauld on the boss’s grand ambitions

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Twisteddoodles: What did the printer say to the radio?

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Kaizen concept; the continuous improvement in business for efficiency and effectiveness. Kaizen cycle icon on wood cubes; improve, continuous, process, result, standard solution. Quality improvement.

Mind

Think small for attainable New Year’s resolutions

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champagne spoon

Does putting a spoon in a bottle of champagne stop it losing its fizz?

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MGCGTA Two identical twins, sitting in cafe, wearing the same clothes, writing with both hands, simultaneously, London, England, UK

Why aren鈥檛 we equally capable with our left and right sides?

One reader explains how well laterality of function, in which one side of the body has different 鈥渟pecialisations鈥� from the other, has served us humans

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This week鈥檚 new questions

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Comment

Celebrating New Year with the otorhinolaryngology crew

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Earth

See a dazzling collection of the year’s best northern lights pictures

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Twisteddoodles on the amount of cheese currently in the fridge

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