How did you go about heating the water for this morning's shower? Did you leave the boiler on all night or just heat what you needed? Find out which is the most energy efficient in this Question of the Week! Plus, we ask why people get dark circles around their eyes. Like this podcast? Please help us by <a href="https://www.thenakedscientists.com/donate">supporting the Naked Scientists</a>

How did you go about heating the water for this morning's shower? Did you leave the boiler on all night or just heat what you needed? Find out which is the most energy efficient in this Question of the Week! Plus, we ask why people get dark circles around their eyes. Like this podcast? Please help us by supporting the Naked Scientists

How did you go about heating the water for this morning's shower? Did you leave the boiler on all night or just heat what you needed? Find out which is the most energy efficient in this Question of the Week! Plus, we ask why people get dark circles around their eyes. Like this podcast? Please help us by <a href="https://www.thenakedscientists.com/donate" rel="noopener noreferrer">supporting the Naked Scientists</a>

What's the most efficient way to heat water?

Each week we set out to solve one of the world's weirdest, wackiest, funniest and funkiest scientific puzzles. And along with the answer there's a brand new question to think about for next time...

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What's the most efficient way to heat water?

What's the most efficient way to heat water?

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