This week鈥檚 new questions
Is the concentration of salt in the oceans gradually increasing and will there come a point life can no longer tolerate it? And why are MRI machines so noisy?
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Is the concentration of salt in the oceans gradually increasing and will there come a point life can no longer tolerate it? And why are MRI machines so noisy?
Do birds really sleep more in winter? And why do we scream in fear?