杏吧原创

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

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

Throwing the head back straightens our airway and can help sound travel further, explain our readers

Close-up of a Cymbiola nobilis shell, also known as the noble volute, against a black background, featuring its distinctive zigzag patterns and smooth texture; Shutterstock ID 2637416271; purchase_order: -; job: -; client: -; other:

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

cinematic flight through dark deep space asteroid field with stars; Shutterstock ID 2687214359; purchase_order: -; job: -; client: -; other:

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

2K18TC6 London, UK. 16th Sep, 2022. Shaikha Al Mazrou, Red Stack, 2022, Lawrie Shabibi - Frieze Sculpture, one of the largest outdoor exhibitions in London, including work by international artists in Regent's Park. Credit: Guy Bell/Alamy Live News

Why do we use pillows? part 3

This week鈥檚 new questions

3CHF9KF Towels drying on stone wall

Is it more efficient to dry towels hung up portrait or landscape?

cinematic flight through dark deep space asteroid field with stars; Shutterstock ID 2687214359; purchase_order: -; job: -; client: -; other:

If Earth exploded, how many rocks would have signs of life?

(Original Caption) 7/5/1946-The roller coaster is a rough ride, but do they love it! This unposed photo was taken by the intrepid photographer from a front seat, as the car made a stomach-dropping descent. A companion clutched the camera while he clicked the shutter. ACME ROTO SERVICE FOR IMMEDIATE RELEASE BPA 2 #124

Why do we scream in fear? part 3

Gold jewelry with space for writing; Shutterstock ID 735656746; purchase_order: -; job: -; client: -; other:

Why do jewellery chains become so tightly knotted together? part 2

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

This week鈥檚 new questions

Is there an聽optimal way to clean a glass jar? What would the horizon and landscape look like on a disc-shaped 鈥渇lat Earth鈥� planet?

Why are MRI machines so noisy and what stops us making them quieter?

Will the ocean ever be too salty for life to thrive? Part 2

If all Earth鈥檚 water were put in a ball, how large would it be? Part 2

This week鈥檚 new questions