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Afrcan Elephant on the move

This week鈥檚 new questions

Why are the largest modern land animals so much smaller than the largest land dinosaurs, and why does runny honey stop dripping when there鈥檚 still plenty left on the spoon?

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Galaxy - Elements of this Image Furnished by NASA; Shutterstock ID 1716207277; purchase_order: -; job: -; client: -; other: -

So much in the universe spins. Could the universe itself be spinning?

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Bernini statue detail of Gange with Latin words engraved on a wall Roman Capitol; Shutterstock ID 131482886; purchase_order: -; job: -; client: -; other: -

Do we really know how ancient Romans pronounced Latin words? (Part 2)

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Mandatory Credit: Photo by Denis Closon/Shutterstock (947726e) Sticking plasters Sticking Plaster

This week鈥檚 new questions

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This mosaic of Mars is a compilation of images captured by the Viking Orbiter 1. The center of the scene shows the entire Valles Marineris canyon system, more than 2,000 miles (3,000 kilometers) long, 370 miles (600 kilometers) wide and 5 miles (8 kilometers) deep, extending from Noctis Labyrinthus, the arcuate system of graben to the west, to the chaotic terrain to the east.

If humans colonised Mars, how would they calculate time?

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JMD2WX refreshing lemonade drink with mint lime lemon in garden

Why did ice in my drink in Spain take longer to melt than at home?

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Bengal cat washing itself on bed; Shutterstock ID 1123136123; purchase_order: -; job: -; client: -; other: -

This week鈥檚 new questions

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MNN37P Illustration comparing the planets of the Solar System and the Sun on the same scale. The planets are shown to scale relative to each other but their distances are not. From left to right the bodies are: the Sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

Will there ever be a time when all our solar system鈥檚 planets align?

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R2YAK1 Professional washer in black uniform and cap wiping with sponge car wheel of a luxury car during the washing process outdoors

Why are the front wheels of my car much dirtier than the rear ones?

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Could land-dwelling octopuses develop technology? (Part 3)

To develop technology, octopuses would need to evolve writing to pass information between generations, says one reader

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This week鈥檚 new questions

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Is there a correct way to fill a dishwasher to maximise cleanliness?

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Could a mountain as high as Mars鈥檚 Olympus Mons be possible on Earth?

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How and when did the North American accent develop? (part 2)

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