Why is the noise of aeroplanes louder in colder weather?
It isn鈥檛 your imagination! Sound waves can become focused due to the impact of colder temperatures on the atmosphere
Regulars
Why are birds mostly monogamous, but not mammals? (part 2)
Regulars
This week鈥檚 new questions
Regulars
Do I weigh more at night due to the gravitational pull of the sun?
Regulars
How do eardrums convey sound? Don鈥檛 the various frequencies interfere?
Regulars
In which direction in the sky did the big bang take place? (part 2)
Regulars
This week鈥檚 new questions
Regulars
How does a scone develop a 鈥渨aist鈥� as it rises in the oven?
Regulars
Why do loose screws only get looser, not the other way round? (part 2)
Regulars
This week鈥檚 new questions
I fill a bucket with water from a tank by gravity, but what happens to the gravity? And birds seem to have quicker reaction times than humans, so is their brain processing speed faster than ours?
Regulars
What is the point in having nerve endings in our teeth?
Regulars
Doing strenuous exercise, it helps to shout the number of reps. Why?
Regulars
Would a tug of war be possible over 42 km between France and England?
Regulars
How much of my body from 40 years ago is part of me today? (part 2)
Regulars