快猫短视频

A runner near mile marker 20.2 in the Bronx grimaces in pain as he competes during the 2017 TCS New York City Marathon in New York on November 5, 2017. Five days after the worst attack on New York since September 11, 2001, the city is staging a show of defiance on November 5, as 50,000??runners from around the world are set to participate in the New York Marathon, under heavy security. (Photo by Don EMMERT / AFP) (Photo by DON EMMERT/AFP via Getty Images)

Health

Can running too far be bad for your health?

There鈥檚 no doubt that doing some long-distance running improves our fitness, but at what point does it become too much, asks Grace Wade

rainy days rain drops on the window surface ; Shutterstock ID 724215220; purchase_order: -; job: -; client: -; other: -

Why does water never move in straight lines?

Male nose close up bottom view - hair in the nostrils; Shutterstock ID 1895123341; purchase_order: -; job: -; client: -; other: -

I understand why we have two eyes and two ears 鈥� but why two nostrils?

an australopithecus, one of our ancestors; Shutterstock ID 790742188; purchase_order: -; job: -; client: -; other: -

When did humans first start to sing? Part 2

JAPAN. Tokyo. Bank near Tokyo Station. 2002.

This week鈥檚 new questions

Comment

Why do so many AI company logos look like buttholes?

Out of Africa champagne picnic experience. Masai Mara luxury safari. Kenya Kenya???s national parks and reserves offer tourists the chance to see wild animals in what remains of their natural habitat. In Masai Mara, tourists engage in colonial fantasies while re-enacting the romantic picnic scene in the film Out of Africa. Local Masaai tribesman are employed to provide picturesque authenticity to the experience. Earth???s wildlife populations have plunged by an average of 69% in the last 50 years; 90% of African elephants have been wiped out in the past century. Kenyan national parks provide a sanctuary, but the animals living within them are allowed to survive essentially for human entertainment and reassurance. These animals become, in effect, performers for paying tourists eager to see a nostalgic picture-book image of the natural world.

Environment

Captivating images expose a ‘staged version’ of nature

Tom Gauld on grammatical voices for use in scientific writing

Twisteddoodles on houseplants versus zombies

Liquid Gold Anna Curran Department of Mathematics A lattice of bubbles inside a ring that has been dipped in soapy water. The bubbles hold their shape because of molecules in the dish soap called surfactants, which stabilise the interface. Surfactants are all around us - for example, they allow soap to break down dirt and bacteria, and they are given to premature babies to help them inflate their lungs. Conversely, they threaten the efficacy of various industrial applications such as self-cleaning surfaces and laptop cooling systems. My research focuses on mathematically modelling the effect of these molecules at a f luid interface, in order to gain a greater understanding of how to control their behaviour in these applications.

Physics

Photography contest spotlights the beauty of science in vivid detail

A collection of images from Imperial College London's photography competition uncovers the visual splendor of scientific discovery

Life

Should you water your orchid with ice cubes?

How long would it take to accelerate to 99 per cent light speed?

Is it known when humans or our ancestors first started to sing?

This week鈥檚 new questions