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This week’s new questions

Why do humans have a common sense of beauty for things like sunsets, and do other animals share this appreciation? And why can’t we cool water as quickly as we can heat it?
beautiful sunset on some beach in the world with the best friend; Shutterstock ID 1970811404; purchase_order: -; job: -; client: -; other:
Beautiful sunset on some beach in the world with the best friend
Shutterstock/tatangarcia

Why do humans have a common sense of beauty for things like sunsets, and do other animals share this appreciation?

Robert Johnson
Ipswich, Suffolk, UK

Breslavtsev Oleg/Shutterstock

Why can’t we cool water as quickly as we can heat it?

John Bailey
Farnborough, Hampshire, UK

Last Word is New Scientist’s long-running series in which readers give scientific answers to each other’s questions, ranging from the minutiae of everyday life to absurd astronomical hypotheticals. To answer a question or ask a new one, email lastword@newscientist.comTo answer this question – or ask a new one – email lastword@newscientist.com.

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Topics: Last Word