Answers to questions about chemistry, matter, gases, fuels, green chemistry, nanotechnology...
Could we eat aliens?
It's all about the ions...
How much of an effect do the different types of pollution face masks have?
Is the frozen water on the Moon, Mars or anywhere else in space drinkable?
Normally, when stuff collides, things fly apart from each other. So how did planets form in the first place?
Seats are weighty, but would it make much of a saving?
Water contains hydrogen and oxygen, both of which are important in combustion, so why is it used to put out fires?
Why don't you get thrown backwards when you switch on your torch? Kerstin Göpfrich found out from Dr Anna Lombardi.
Could the testing of nuclear bombs lead to earthquakes?
This time, Kevin asked why line drying makes clothes rougher and stiffer than tumble drying...