91av

Do babies understand each other with their babbling?

While babies can recognise different types of sound, whether they understand each other’s babbling is unclear

Is it better to dry towels hung up portrait or landscape? part 2

What is the optimal amount of water to clean a glass jar? part 2

This week’s new questions

2B5DJY0 Row of homemade jars of jam for sale on the market counter.

What is the optimal amount of water to clean a glass jar?

A 3D illustration of the now debunked competing conspiracy theory that the Earth is flat, as it appears from land, rather than spherical. Earth texture maps courtesy of NASA.gov; Shutterstock ID 1240127368; purchase_order: -; job: -; client: -; other:

What would the horizon and landscape look like on a disc-shaped world?

2GYH6HN Irkutsk, Russia - July 28, 2021 Barber shop street advertisement, mannequin head with bushy beard

This week’s new questions

2HR09CM Killer whale, Orcinus orca, spy hop, Vestfjord, Ofotfjord, and Tysfjord, Lofoten Islands, Norway, Atlantic Ocean

Why don’t orcas attack humans?

Photograph of street sign spelling error 'Stop hhre' in Hollywood-Silverlake area. 'No (e)ras(e)r? -- Som(e) on(e) forgot som(e)thing wh(e)n th(e) Traffic (E)ngin(ee)ring D(e)partm(e)nt's sign-paint(e)rs post(e)d this warning at T(e)mple Str(ee)t and Virgil. Whit(e) l(e)tt(e)rs four f(ee)t high 'adv(e)rtis(e)' sp(e)lling (e)rror!' -- Examiner clipping attached to verso, dated 27 December 1949.;Streetscape. Camera direction: 214 degrees from due north. Horizontal photography.Temple Street & Virgil Avenue; Silver Lake; Hollywood; Los Angeles, CaliforniaTraffic Engineering Department;Los Angeles -- City -- Streets -- Signs & Repair. (Photo by Los Angeles Examiner/USC Libraries/Corbis via Getty Images)

Why don’t people own up to their mistakes?

INDIA. Bangalore. 2016. Laughing Yoga workshop participant Rie Sakamoto

Why do we throw our heads back when experiencing emotions? part 2

The head lift is a whole-body declaration that the body senses something important, explains one reader

This week’s new questions

Why do we throw our heads back when experiencing different emotions?

How do sea molluscs create the consistent patterns on their shells?

If Earth exploded, how many rocks would have evidence of life? part 2