51动漫

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Twisteddoodles on academic conversations

This week's cartoon from Twisteddoodles

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See the world’s tropical forests illuminated in stunning new show

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Rake with fallen leaves in autumn. Man cleans the autumn park from yellow leaves. Volunteering, cleaning, and ecology concept. Seasonal gardening.; Shutterstock ID 2026442297; purchase_order: -; job: -; client: -; other: -

Life

Why you don’t need to bother raking up dead leaves from your lawn

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Sound waves spectrum

As sound dissipates, what happens to this energy?

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Two seagulls above aircraft wing

Do winged animals ever suffer comparable mishaps to aircraft? Part two

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In this Voyager 2 image of Saturn, obtained Aug. 11, 1981, from a range of 14.7 million kilometers (9.1 million miles), north is at the upper right edge of the disc. Seen above the planet are the satellites Dione (right) and Enceladus. This false-color print shows a green spot at the south edge of a yellow band; in true color, the spot would appear brown and the band white. A bright yellow spot slightly above and to the left in this image moves eastward relative to the green spot at a rate that allows it to pass the green feature in about 50 days. The convective clouds that appear between the two spots are typical of the region. Here, the smallest visible structures measure about 270 kilometers (170 miles). The Voyager project is managed for NASA by the Jet Propulsion Laboratory, Pasadena, Calif. https://www.jpl.nasa.gov/images/pia01959-voyager-2-image-of-saturn

This week鈥檚 new questions

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Pretend engine noises make electric cars more fun

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Tom Gauld on some useful new tech terms

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Twisteddoodles on commonly confused words

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Quat is an artemia collector. Artemia is a primitive arthropod also known as brine shrimp, it is used as a rapidly growing food source for farm fish. The salinity level of the water in the Aral Sea does not allow any other life to exist in or near it. A tiny creature you can?t see with the naked eye is all the sea is willing to give.

Environment

Picturing life in the dust bowl remains of the once mighty Aral Sea

Photographer Kristina Varaksina has documented the lot of people living near what was once the fourth-largest freshwater lake in the world, the Aral Sea, much of which has become a barren desert

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Mathematics

How to perfectly wrap gifts of all shapes and sizes using maths

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What is the shortest space a parking car can get into?

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Why don鈥檛 marine mammals like whales get ‘the bends’? Part 2

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This week鈥檚 new questions

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