This week’s new questions
9 December 2020
Many humans are long or short-sighted - is it the same for other animals? And why does it make such a racket when glass bottles are emptied into a recycling bank?
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Premium
What difference does the timing of meals over the day make?
9 December 2020
If you eat three meals a day, does it make a difference if they are taken within, say, an 8-hour window or a 14-hour one? Here are our readers' responses
What makes some people short-sighted and others long-sighted? (cont.)
9 December 2020
In the eye, what exactly leads to short- and long-sightedness? Does environment play a part, or genetics? The debate continues
Has the doubling of the human population increased Earth’s mass?
9 December 2020
In the past 50 years, the number of humans on Earth has doubled to nearly 8 billion, so has the mass of our planet and everything on it increased? Readers respond
