51动漫

Handsome man lying in bed and warm blanket and stretching and yawning. Sleepy guy has laptop on the top and holding cup with hot tea or coffee in right hand; Shutterstock ID 622519436; purchase_order: -; job: -; client: -; other: -

Is it possible to yawn without closing your eyes? (part 2)

Our readers continue the debate about the link between yawning and closing our eyes, and raise the issue of yawning with just one arm raised

JMD2WX refreshing lemonade drink with mint lime lemon in garden

This week鈥檚 new questions

Tom Gauld: On Fridays, the whole research team works from home

Twisteddoodles on exhibition stands at science conferences

NEW CLOUDS ABOVE US The modern world relies on satellites for its communications and commerce. While mostly invisible to us as we go about out daily lives, our entire modern way of living ? both socially and professionally ? is intimately linked with the orbital space around the Earth. How we treat this extraterrestrial environment will determine how much we can rely on it in the future. ?In this view of Greenwich, London, you?ve got examples of what?s in space. I photographed about 300 artefacts ranging from satellites to rocket bodies, satellite parts, solar panels, all the way down to the screws and a glove to show what?s up there. The photography was done over a one year period, across North America, Europe and the UK. I wanted to show this from a human perspective ? from the ground looking up. I chose Greenwich because of its history of astronomy and because from there you can see the financial district of London to highlight the modern world?s connection to the satellites that circle Earth.? Max Alexander

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Space debris problem highlighted in new series of photographs

Mathematics

How maths reveals the best time to add milk for hotter tea

LIVERPOOL, ENGLAND - APRIL 09: win Randox Grand National Handicap Steeple Chase at Aintree Racecourse on April 09, 2022 in Liverpool, England. (Photo by Alan Crowhurst/Getty Images)

Are racehorses aware that they are expected to come first?

Panoramic view of wind farm or wind park, with high wind turbines for generation electricity with copy space. Green energy concept.; Shutterstock ID 1933377149; purchase_order: -; job: -; client: -; other: -

Is there a tipping point when harvesting renewable energy is harmful?

Farmer harvesting organic rhubarb from her kitchen garden. Rhubarb can be harvested many times through the year. Photographed at an ???off grid??? home on the island of Moen in Denmark. Colour, horizontal format with some copy space.

How was rhubarb found to be edible when it tastes bad raw? (Part 2)

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

This week鈥檚 new questions

Many things in the universe spin, so could the universe itself be spinning? And why can I only remember words that I know how to pronounce?

Does “the earthquake chewed my data” trump “the dog ate my homework”?

Tom Gauld on the outcome of an experiment

Twisteddoodles: Researchers have made the world’s most powerful laser

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Famed abstract artists capture nature as you鈥檝e never seen it before