This week’s new questions
Is online shopping better for the environment? And can you ride a bike with no hands?
Regulars
Sneeze blindness: Why do your eyes close when you sneeze?
Beef with tofu: is local beef better for the planet than tofu imports?
Regulars
Clean limbs: the debate continues on whether you should wash your legs
Regulars
This week鈥檚 new questions
Regulars
Schr枚dinger’s scissors: Why can’t we see things right in front of us?
Regulars
Future fossils: Will new coal and oil reserves form once we’re gone?
Regulars
This week鈥檚 new questions
Regulars
Special effects: What creates stripes and colours in the sky?
Regulars
A key question: The secrets and security of a rotor-style lock
How secure is a four-rotor lock? Continuing the discussion with an eye and lock-opening reader contribution
Regulars
This week鈥檚 new questions
Regulars
Lucky dip: What’s the best strategy for winning the lottery?
Regulars
Itchy and scratchy: why doesn’t a mosquito bite stop being itchy?
Regulars
This week鈥檚 new questions
Regulars