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AX21BH Close-up shot, goosebumps

Why does some music give us goosebumps?

We respond to "danger" sounds – whether they are natural or in music – by getting goosebumps because this was evolutionarily important, say our readers

Close-up of construction bubble level.

When a spirit level is flat, what does that mean relative to Earth?

Hand of male holding soil in the hands for planting. Expert hand of farmer checking soil health before growth a seed of vegetable or plant seedling. Gardening technical, Agriculture concept.; Shutterstock ID 2252590625; purchase_order: -; job: -; client: -; other: -

This week’s new questions

Why is tea more likely than coffee to leave a stain in a mug?

Cosmonaut in a futuristic dystopian city . Sci fi and virtual reality concept . This is a 3d render illustration . ; Shutterstock ID 2230705453; purchase_order: -; job: -; client: -; other: -

What happens to our electronic cloud records when we die? Part 2

In late summer sunflower ripened on the farm field; Shutterstock ID 1883406451; purchase_order: -; job: -; client: -; other: -

Plants wither away when neglected. Can they also feel pain?

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

This week’s new questions

Outdoor Backpack with Water Bottle on the back of a girl, School, isolated Green background Nature. Education concept; Shutterstock ID 2038295597; purchase_order: -; job: -; client: -; other: -

Is it more efficient to carry water in a bottle or in my stomach?

Sprinters running on the athletics Track in sunset light. Shadows on the track, Sprint, Track and Field photo, original wallpaper for games in Japan, Tokyo. Athletics meeting on blue track; Shutterstock ID 2000844656; purchase_order: -; job: -; client: -; other: -

Did the running skills of our species help us outcompete Neanderthals?

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

This week’s new questions

Binocular vision gives us a 3D perspective, and two ears let us locate sound, but why do we have two nostrils? And how long would it take to get a spacecraft to 99 per cent light speed without serious harm to anyone inside?

Could alien life forms live for hundreds or thousands of years?

Why don’t trees rot in the ground, while wooden structures do? Part 2

What is this shape with three axes of symmetry called? Part 2

This week’s new questions